这阻止它们形成纤维。

That discourages them from forming fibres.

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它们缺乏储水结构，而且它们长在岩石表面，这阻止了它们利用地下水，所以它们反而形成了改变新陈代谢的能力。

They lack water-storing structures, and their existence on rock faces prevents them from tapping groundwater, so they have instead developed the ability to change their metabolism.

youdao

如果多个箭头显示一个环形的锁请求模式—由于它们正在相互等候其它线程释放锁，所以线程彼此阻止运行—结果就形成了一个死锁。

If multiple arrows show a circular lock-request pattern — threads prevent each other from running because they are waiting for each other to release a lock — then you have a deadlock.

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