In the last letter he simply wrote out a plus and a minus sign, and I was supposed to cross one out.
最近一封信，他索性把加减号都写好，我只要划掉一个就行。
The cooling lasers propel the chilled atoms gently into a zone where another laser system's beams cross one another.
冷激光将冷却原子推入一个存在互相垂直激光的区域。
The photo captures a key moment when he was striving to cross one hurdle, concentrating all his attention and strength.
照片抓住了刘翔集中所有力量正在跨栏的精彩时刻。
In addition, the measurement on pressure loss cross one side of four-way diverter valve has been carried out and some questions on pressure loss of four-way diverter valve are posed.
同时，也对四通换向阀进行了单侧压力损失测量，对四通换向阀说明书上的压力损失参数的准确性提出了质疑。
One chilly night when I was hiking in the Rocky Mountains with some students, I mentioned that we were going to cross a mountain stream.
一个寒冷的夜晚，当我和几个学生在落基山脉徒步旅行时，我提到我们将要渡过一条山间小溪。
Currency-conversion costs remain one of the biggest obstacles to cross-border trade.
货币兑换成本仍是跨境贸易的最大障碍之一。
No one tried to cross the picket lines.
没有人试图越过纠察线。
There was only one big road to cross, but it had a zebra crossing.
只有一条大路要过，但它有斑马线。
She had not known before that this was one of the things which made her feel sour and cross.
她以前不知道这是使她感到酸楚和生气的事情之一。
When you cross the finish line you'll be given a bar code and you take this to one of the run volunteers, who will scan it.
当你冲过终点线时会得到一个条形码，你把它交给其中一个赛跑志愿者，他会扫描这个条形码。
Each day about one hundred thousand automobiles cross the bridge taking people to and from the city.
每天大约有10万辆汽车通过这座桥，它们载着人们往返于这座城市。
They would be allowed to send groups of self-driving cars on cross-state road trips, and even set up on-demand fleets of self-driving cars, like the one General Motors and Lyft are building.
他们将被允许派遣自动驾驶汽车小组进行跨州公路旅行，甚至可以按需组建自动驾驶汽车车队，比如通用汽车和莱福特正在组建的车队。
The world's longest cross-sea bridge—the Hong Kong-Zhuhai-Macao Bridge is considered as "one of the seven wonders of the modern world" by some people.
世界上最长的跨海大桥——港珠澳大桥被一些人认为是“现代世界七大奇迹之一”。
Her idea is: live a life and try not to create any rubbish; use different kinds of ways to save the environment, such as stopping the use of one-off objects; giving unwanted things to others or donating these things to organizations like the Red Cross.
她的想法是：好好生活，不制造一点垃圾；采取不同的方式拯救环境，比如停止使用一次性物品；把不想要的东西给别人，或者捐给像红十字会这样的组织机构。
The bride and groom drink “cross-cupped wine” from one another's glasses.
新郎新娘喝交杯酒。
The Trojan war is one that women cross-dress as men to fight.
特洛伊战争是一场女人扮成男人去战斗的战争。
Somebody said something about the garden, and at last Mrs. Donnelly said something very cross to one of the next-door girls and told her to throw it out at once: that was no play.
有人在讲花园什么的，最后是唐纳利太太对一个邻家女孩非常发火的声音，叫她把那东西立即仍出去：那哪里是游戏。
They could cross the mountain in one of two places -- the White Pass and the Chilkoot Pass.
他们翻越这座高山有两条路：怀特路和切克特路，他们只能在这两条路中任选一条。
With each recursive step, cross products with one additional Permutation Group are formed.
伴随每个递归步骤，会形成带有一个额外置换群的向量积。
See the bridges and cross the one that’s in front of you.
看见了一座座小桥，跨过你面前的那座。
while in Portland, Oregon, some 6,000 cyclists cross just one of the city’s many bridges each morning.
而在俄勒冈州的波特兰市,每天早晨6000多名骑车者只能从城市的许多大桥中的一条通过。
Make a To Do list (and cross at least one thing off).
列出一张“要做的事”的单子，并至少划掉其中一条。
He looks up -- sees one cross a limb overhead.
他向上看——看见一个黑影掠过头顶的树枝。
Freezing funding for EU mega-projects is equally unworkable; such projects often cross borders, so punishing one country leaves others to suffer too.
冻结欧盟大计划的基金同样是不可行的。这样的计划经常是跨境的，因而惩罚一个国家也会牵连其他的国家。
We become neighbours when we are willing to cross the road for one another.
当我们愿意穿过马路去了解另外一个人时，我们就成了近人。
We become neighbours when we are willing to cross the road for one another.
当我们愿意穿过马路去了解另外一个人时，我们就成了近人。
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