1·Most spiders weave webs that are almost invisible.
大多数蜘蛛可结成几乎看不见的网。
—— 《牛津词典》
2·The insects cannot see the webs.
昆虫看不见网。
3·Why spiders live in webs?
蜘蛛为什么住在网上？
4·Why do spiders make webs?
为什么蜘蛛要织网？
5·Many spiders make webs to catch food.
许多蜘蛛都是靠织网来捕捉食物的。
6·Black widow spiders also use their webs to ensnare their prey.
黑寡妇蜘蛛也用它们的网诱捕猎物。
7·Scientists have found out some key principles operating in food webs.
科学家们已经发现了在食物网中起作用的一些关键原理。
8·These spiders spin large webs in which females suspend a cocoon with hundreds of eggs.
这些蜘蛛结成很大的网，雌性蜘蛛在上面用成百上千的卵悬挂茧。
9·Some species of the spider weave designs into their webs, creating zigzag patterns that can either attract prey, like bees, in bright sunlight.
一些种类的蜘蛛能设计织网，设计出可以在明媚的阳光下吸引像蜜蜂等猎物。
10·Mathematical models have also revealed that food webs may be unstable, where small changes of top predators can lead to big effects throughout entire ecosystems.
数学模型也揭示了食物网可能是不稳定的，顶级肉食性动物的微小改变会对整个生态系统产生巨大影响。
1·Black widow spiders also use their webs to ensnare their prey.
黑寡妇蜘蛛也用它们的网诱捕猎物。
2·These spiders spin large webs in which females suspend a cocoon with hundreds of eggs.
这些蜘蛛结成很大的网，雌性蜘蛛在上面用成百上千的卵悬挂茧。
3·Mathematical models have also revealed that food webs may be unstable, where small changes of top predators can lead to big effects throughout entire ecosystems.
数学模型也揭示了食物网可能是不稳定的，顶级肉食性动物的微小改变会对整个生态系统产生巨大影响。
4·Support for this idea came from the observation that long-lasting climax communities usually have more complex food webs and more species diversity than pioneer communities.
支持这一观点的是，长期存在的顶极群落通常比先锋群落有更复杂的食物网和更多的物种多样性。
5·Overfishing not only causes depletion in individual fish stocks, but also disruption to entire ecosystems and food webs in the ocean.
过度捕捞不仅引起个别鱼种的消耗，而且还引起海洋中整个生态系统和食物网的崩溃。