They may also play dead. Birds are ladybugs' main predators, but they also fall victim to frogs, wasps, spiders, and dragonflies.
鸟类是瓢虫的主要天敌，有时他们也是青蛙，黄蜂，蜘蛛和蜻蜓的战利品。
Silk is also used for the safety lines many spiders drag behind them, which save them if they fall.
蛛丝也是许多蜘蛛拖在身后的安全索，能在它们跌落时保住小命。
By all laws of physics, spiders as big and heavy as tarantulas shouldn't be able to climb walls or hang upside down-they should fall on their heads.
根据所有的物理定律，像狼蛛那么大、那么重的蜘蛛都不应该会爬墙、会倒悬，倒悬着就应该头朝下摔下来。
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