As in most every language, Scala's if evaluates a conditional expression, then proceeds to a block if the result is true or branches to an alternate block if the result is false. A simple example.
和大多数语言一样，Scala的if测试一个条件表达式，然后根据结果为真或假来跳转到响应语句块中。
It takes semantics as a main thread to discuss the expression of alternate category in modern Chinese.
全文以语义为纲，探讨现代汉语交替范畴的表达。
Can media be a vehicle for the expression of an alternate social identity?
媒体是表达另类社会认同的工具吗？
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