你甚至可以买到看起来很旧但很好用的新牛仔帽。
You can even buy a new cowboy hat that is made to look very old and well used.
现在，pi演算已经可以很好地直接用于“局部的”(VM内的)地方，但还不太好用于实现分布式的地方，因为在pi演算中，通道两端都是可活动的。
Now, the PI calculus is good to use directly for "local" (intra-VM) things, but it is not so good for implementing distributed ones because in the PI calculus both ends of a channel are mobile.
第二种说法很好用，因为它虽然听起来不错，但实际可能指的是任何含义。
The latter phrase is handy because it sounds nice but could mean almost anything.
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