First, you can mix single and double quotation marks when creating a string, as long as the string USES the same type of quotation mark at the beginning and end.

第一，在创建字符串时，您可以混合使用单引号和双引号，只要字符串在开始位置和结束位置使用同一类型的引号。

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If the double quotation mark is the outermost quote, all variables are expanded.

如果最外边的引号是双引号，那么展开所有变量。

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The strings I've been creating using the single, double, or triple quotation mark syntax are still string objects.

使用单引号、双引号和三引号语法创建的字符串仍然是字符串对象。

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After hitting the double-digit mark of 10% growth for the last five weeks, the mammoth coffee house expects things to cool down in October.

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