Birds feed on worms. A bird will go hungry if it cannot catch worms. The bird that gets up early is sure to get some food, so the early bird catches the worm.

鸟以虫为食。鸟捉不到虫就会饿。早起的鸟儿定能得到食物，因此早起的鸟儿有虫吃。

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It will help researchers learn how basic neural circuits work together in sensing and responding to the environment, such as when a worm smells food and crawls toward it.

能帮助研究者了解基本神经回路如何产生感觉及对环境作出回应的，例如什么时候蠕虫发现事物并爬向事物。

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In worm-free woodlands, leaves pile up in drifts on the forest floor. Trees and shrubs in wormless places depend on litter for food.

在没有蚯蚓的林地里，落叶成堆地堆积在森林的地表，树木和灌木丛依靠枯枝落叶层生长。

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