These insects can wreak havoc on crops.
这些昆虫可严重危害农作物。
Flycatchers feed primarily on winged insects.
鹟主要捕食有翼昆虫。
The insects were examined under magnification.
这些昆虫是放大后加以观察的。
Like most aquatic insects, mayflies moult as they grow.
像大多数水生昆虫一样，蜉蝣在成长过程中换羽。
I continued studying moths, and branched out to other insects.
我继续研究飞蛾,同时也开始研究其它昆虫。
Many of the indigenous insects are needed to pollinate the local plants.
需要很多种土生昆虫给当地植物授粉。
Both are moderately large insects, with a wingspan of around four centimetres.
这两只都是中等大小的昆虫，翼幅大约为四厘米。
The more pesticides are used, the more resistant the insects become so the more pesticides have to be used. It's a vicious circle.
杀虫剂使用得越多，那些昆虫的抵抗力越强，因此就要使用更多的杀虫剂。这是一个恶性循环。
昆虫在水面滑行。
它捉昆虫作为食物。
她是不是在数昆虫？
昆虫吃植物。
但我不喜欢昆虫。
Other sea turtles eat insects and plants.
其他的海龟吃昆虫和植物。
Yes, many cats will eat insects and spiders.
是的，许多猫会吃昆虫和蜘蛛。
Dinosaurs, insects and mammals took to the air.
恐龙、昆虫和哺乳动物飞上了天空。
These plants kill insects - aren't bees insects?
这些东西是昆虫杀手–蜜蜂不正是昆虫吗？
Dingle is an evolutionary biologist who studies insects.
丁格尔是一位研究昆虫的进化生物学家。
Spiders catch their food, usually insects, in their web.
蜘蛛在它们的蛛网上捕食，一般捕到的都是昆虫。
Here lives a kind of strange insects native to Xinjiang.
这里生活着一种新疆特有的昆虫。
Some plants pump out smelly chemicals to keep insects away.
有些植物释放出有臭味的化学物质来赶走昆虫。
You may take it for granted that the frog catches insects easily.
你可能认为青蛙很容易抓到昆虫是理所当然的。
The little insects were crawling around, and the plants were there.
昆虫爬来爬去，还有植物在那里。
The little insects were crawling around, and the plants were there.
昆虫爬来爬去，还有植物在那里。
Different types of insects leave different types of marks from their meal.
不同的昆虫进餐后留下的疤痕也不相同。
What insects have one pair of wings? What insects have two pairs of wings?
什么昆虫有一对翅膀，什么昆虫有二对翅膀？
There are creepy-crawly sensations, like insects crawling beneath the skin.
有令人毛骨悚然的感觉，像昆虫在皮肤下蠕动。
Merian started raising insects at home, mostly butterflies and caterpillars.
梅里安开始在家里饲养昆虫，主要饲养蝴蝶和毛毛虫。
Crocodiles, tortoises, birds, and insects seem to have been little affected.
鳄鱼、乌龟、鸟类和昆虫似乎很少受到影响。
There are creepy-crawly sensations, like insects crawling beneath the skin.
有令人毛骨悚然的感觉，像昆虫在皮肤下蠕动。
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