The difference between the bucket and barrier constructs is that in the former all processes are blocked until another (external) process decides to release them, by "flushing the bucket."

bucket 构造和 barrier 构造之间的区别是：在前者中，所有进程都被阻塞，直到另外一个（外部）进程决定释放它们，而释放是通过“清空 bucket”进行的。

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Because oil is like a lock moisture barrier, if this layer protective film disappears, then the water will soon be air-dry the external environment.

因为油脂犹如锁住水分的一道屏障，如果这层保护膜消失不见，那么，水分很快会被外界环境风干。

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The parabolic barrier, double barrier with a rectangular well, double barrier with a parabolic well structure and the potential barrier placed in an external field are discussed here.

利用该结果分别研究了抛物线型单势垒情况、方型双势垒情况、抛物线型双势垒情况以及置于外场中的双势垒情况。

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Bernstein analyst Ronny Gal suggested in a note to investors, citing weak fundamentals in the US generics space as a barrier to external interest.

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