For the actual buffer processing, the function is perfectly capable of handling zero-sized buffers by simply returning.
对于实际的缓冲区处理，函数只需直接返回，就能够很好地处理大小为零的缓冲区。
The first if statement breaks the recursion if the list is empty, returning zero.
第一个if 语句在列表为空的情况下中断递归，返回零值。
The rest comes from American institutional investors unloading their zero-returning European bonds and looking for some extra yield closer to home.
其他的则来自美国的机构投资者，他们在抛售零回报的欧洲债券，转而寻找一些更靠近美国本土的超额收益。
As the mechanical switch has no function of automatic locking and returning to zero in power failure, there exists some potential danger when used in places where safety is called for.
机械式电源开关不具备停电自锁和断电回零等功能，在一些特殊的安全要求较高的场所，使用这种开关也存在着一定的安全隐患。
As the mechanical switch has no function of automatic locking and returning to zero in power failure, there exists some potential danger when used in places where safety is called for.
机械式电源开关不具备停电自锁和断电回零等功能，在一些特殊的安全要求较高的场所，使用这种开关也存在着一定的安全隐患。
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