They look odd when they sleep, too, because they hang upside down, with their wings draped around their bodies.
它们睡觉时，看起来也很古怪，因为它们用翅膀裹着身体，倒挂着。
Objective to study the trait of intra-stress distribution of lumbar unit during the hang upside down and rotatory manipulation.
目的了解进行倒悬旋转手法时腰椎各结构的应力分布和变化的特点。
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。
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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