Not to be left behind are the disease-spreading pests, about 100 species of which have become immune to a variety of insecticides now in use.
传播疾病的害虫也不甘落后，其中约有100种对目前使用的各种杀虫剂有了免疫力。
Heavier isotopes tend to be left behind when water evaporates from the ocean surfaces, the remaining ocean water becomes progressively enriched in oxygen 18.
当水从海洋表面蒸发时，往往会留下较重的同位素，所以剩余的海水会逐渐富含氧18这种同位素。
If anything, it may spur more buying as investors do not want to be left behind.
倒是随着越来越多的投资者不甘落后，购买量会继续上升。
"They didn't want me to be left behind, so they recommended it to me," he says.
他说：“他们不想让我落伍，就向我推荐了它。”
This means that someone has to travel without using a child restraint or seat belt or someone has to be left behind.
这意味着有人旅行，而不使用儿童约束或安全带或有人要留下。
His school and Quidditch robes, cauldron, parchment, quills, and most of his textbooks were piled in a corner, to be left behind.
学院长袍、魁地奇队袍、坩埚、羊皮纸、羽毛笔以及大多数课本都堆在一个墙角，留在家里。
The animals are happy and content, except for one small thing; they each miss one very special to them, who had to be left behind.
除了一个小问题以外，它们既快乐又满足。 那就是，他们各自都思念着某个很特别的人，某个他们不得不离开的人。
If you know your shortcomings and feel reluctant to change, then you will only vanish with time without any trace to be left behind.
明知己之不足不改，最后只能在蹉跎岁月中渐渐消逝，不留痕迹。
Aldrin appeared on the ladder. Down he came, very slowly. Soon, both men were busy placing experiments to be left behind on the moon.
奥尔德林出现在扶梯上，他非常缓慢地下来了，很快，两人便忙着在月球上放置实验装置。
The animals are happy and content, except for one small thing; they each miss someone very special to them, who had to be left behind.
在那儿，他们都感到满足与快乐，唯一不足的是每一位都很想念他们遗留下在彩虹之桥另一方的朋友。
The policeman said that, as a gang of prisoners was passing, one of the convicts had fallen down, and the convoy officer had ordered him to be left behind.
警察报告说，有一批犯人押过，其中一个倒在地上，押解兵吩咐把他留下来。
There's also the fact that other countries in the region have introduced mandatory English lessons in their elementary schools, and Japan is therefore keen not to be left behind.
另一方面，亚洲其他国家已经自小学施行必修英语制度，日本当然也不能甘落其后。
His school and Quidditch robes, cauldron, parchment, quills, and most of his textbooks were piled in a corner, to be left behind. He wondered what his aunt and uncle would do with them;
他的校服和魁地奇的制服、坩锅、羊皮纸、羽毛笔还有大部分的课本最后都堆到了一个角落里，他不知道姨夫和姨妈会如何处置它们。
Owner of a business trip with my brother back, sighed that he is not "seriously lacking in" with their peers than the older generation, he seems to be left behind thousands of miles away.
哥哥陪老板出差回来，慨叹自己实在不会“拍马”，与同行的前辈比起来，他显得落后于人十万八千里。
Everyone finds it necessary to update his knowledge, otherwise he will be left behind the society.
每个人都认为有必要更新自己的知识，否则将被社会抛在后面。
"Reskilling" is something that sounds like a buzzword but is actually a requirement if we plan to have a future where a lot of would-be workers do not get left behind.
“再就业技术培训”听起来是个流行语，但如果我们希望未来的员工不被时代抛弃的话，这实际上是一个必要条件。
The empty shell of a snail or clam may be left behind, and if it is sufficiently durable and resistant to dissolution, it may remain basically unchanged for a long period of time.
蜗牛或蛤蜊的空壳可能会被留下来，如果足够持久和抗溶解，它可能会在很长一段时间内基本保持不变。
"Left-behind" children hardly ever see their parents, because their parents work in the cities, leaving them behind in the countryside to be cared for by their grandparents.
“留守儿童”几乎见不到他们的父母，因为他们的父母在城市工作，把他们留在农村，由他们的祖父母照顾。
Walk slowly, allowing every life to have freedom and dignity. No one should be left behind by our era.
慢点走，让每一个生命都有自由和尊严，每一个人都不被时代抛下。
More needs to be done to expand economic opportunities for adolescent girls so they are not left behind when transitioning from school into the labor market.
要增加青春期女童的经济机会，使其在从学校过渡到劳动力市场过程中处于有利地位，尚需付出更大努力。
For software vendors there is an increasing urgency to understand, prepare for, and make the transition, or else be left behind on the digital dust heap of history.
对于软件供应商，需要更加迫切地理解、准备和实现这种转变，否则就会被远远地抛在后面，它们的产品也会过时，成为数字垃圾。
Their father told them they could either “command respect” through their efforts, or be left vainly to “demand respect” from people who badmouthed them behind their backs.
他们的父亲告诉过他们，他们要么通过努力“赢得尊重”，要么徒劳地向那些背后会说你坏话的人“要来尊重”。
If this is carried to the extreme, of course, white crystals of salt would be left behind.
当然，如果这种方式走向极端，将会余下白色的盐晶体。
For a large tumor, it may be necessary to do multiple ablations by repositioning the needle electrode into different parts of the tumor to ensure no tumor tissue is left behind.
对于一个大的肿瘤，它可能需要通过到不同肿瘤部位的电极针做多次消融，以确保没有留下肿瘤组织。
But the station master was adamant: rules could not be broken and she had to watch that train disappear towards her destination while she was left behind.
但站长态度坚决，规章制度不能破坏，姑娘只得眼看那趟火车消逝在她要去的方向而撇下了她。
In America, it is not enough to be a traditional and definable social unit, for the old and traditional gets left behind; the new, innovative force is the center of attention.
在美国，传统的、循规蹈矩的社会个体已不足为训，因为陈旧和传统的事物势必落伍，新生的创造性力量才值得注意。
In America, it is not enough to be a traditional and definable social unit, for the old and traditional gets left behind; the new, innovative force is the center of attention.
在美国，传统的、循规蹈矩的社会个体已不足为训，因为陈旧和传统的事物势必落伍，新生的创造性力量才值得注意。
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