血清胺是在神经元之间传递信号的信使分子，人们已经知道它调解着人类行为的很多方面，尽管细节是复杂而有争议的。
Serotonin is a messenger molecule that carries signals between nerve cells, and it is known to modulate many aspects of human behaviour, although the details are complex and controversial.
在很多方面，轻便线程比大多数变体都简单得多；大多数关于信号、锁定及诸如此类的问题都不存在了。
In most respects weightless threads are quite a bit simpler than most variants; most issues about semaphores, locking, and the like disappear.
在最近几个月里，我们在这方面看到了一些鼓舞人心的信号。
In recent months, we've seen encouraging signs on that front.
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