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？
Imagery and construal are two synonymous notions in cognitive Grammar, referring to peoples cognitive ability to construe a situation in alternate ways for purposes of thought or expression.
“意象”与“识解”是两个意义相近的认知语法术语，用来表示以不同方式建构某一情景的认知能力。
That's despite the fact that a gene expression profile of those cells shows little difference between them and stem cells with alternate fates isolated from the upper airways.
一旦到达损伤部位，这些细胞聚集形成“豆荚状”并启动肺泡相关基因的表达，而这些具有小的空心结构的肺泡正是肺部进行气体交换的位点。
That's despite the fact that a gene expression profile of those cells shows little difference between them and stem cells with alternate fates isolated from the upper airways.
一旦到达损伤部位，这些细胞聚集形成“豆荚状”并启动肺泡相关基因的表达，而这些具有小的空心结构的肺泡正是肺部进行气体交换的位点。
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