逗号

A parenthesized expression list yields whatever that expression list yields: if the list contains at least one comma, it yields a tuple; otherwise, it yields the single expression that makes up the expression list.

括号内表达式列表的结果取决于其内部表达式列表的结果：如果表达式列表中包括至少一个逗号，它就生成一个元组；否则，就生成一个由表达式列表组成的表达式。

Here's an example of a rule that parses comma delimited list of numbers We've seen this before

以下是一个分析以逗号分隔的数值的规则例子之前我们已经见过这个例子

Note that these can also be specified with two slashes/commas rather than three.

请注意，这些也可以用两个斜杠/ 3个逗号，而不是指定）。

I don't know how to use commas.

我不知道如何使用逗号。

I don't know how to use commas.

我不知道如何用逗号。

I don't know how to use commas.

我不知道用逗号。

I don't know how to use commas.

我不知道怎样使用逗号。

I don't know how to use commas.

我不知道怎样运用逗号。

If the information is essential, do NOT use commas.

如果此信息是重要的，不要使用逗号。

I don ' t know how to use commas/I don ' t know how I should use commas .

我不知道怎样使用逗号。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。