英语词汇sign optional怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

可选的迹象

以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译

1
Sign up is optional, meaning you can get started very quickly.
注册是可选的，意味着可以快速开始使用。
2
The equal sign and the expression giving the initial value are in fact optional in a variable declaration.
等号和表达式给出的初始值在变量声明时实际上是可选的。
3
The exclamation sign (!) is optional, and says whether existing links should be overwritten (existing files are never overwritten).
惊叹号(！)是可选的，它表示是否应该覆盖现有的链接(从不覆盖现有文件)。

单词	sign optional
释义	sign optional 翻译可选的迹象以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译网络释义 1 ?任意符号任意符号双语例句 1 Sign up is optional, meaning you can get started very quickly. 注册是可选的，意味着可以快速开始使用。 2 The equal sign and the expression giving the initial value are in fact optional in a variable declaration. 等号和表达式给出的初始值在变量声明时实际上是可选的。 3 The exclamation sign (!) is optional, and says whether existing links should be overwritten (existing files are never overwritten). 惊叹号(！)是可选的，它表示是否应该覆盖现有的链接(从不覆盖现有文件)。
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