At first, this seems kind of limiting but it actually has some very nice consequences: if a function is called twice with the same parameters, it's guaranteed to return the same result.
一开始会觉得这很受限，不过这恰恰是它的优点：若以同样的参数调用同一函数两次，会得到相同的结果。
A helping hand is always nice, especially when it comes to meeting woman, but seriously, this seems so out of place on Facebook to me.
一些援手总是好的，特别是结交女朋友的“帮助”，但是说真的，这在我看来完全不是Facebook应该做的。
"Offering a handful of classes online is a really nice attempt, but it just seems late and a stutter step," he says.
他说：“提供一些在线课程真的是一种非常好的努力，但是它看起来有点晚并且步履蹒跚。”
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