This operation expects a string, to be interpreted as a ticker symbol for a stock, and returns a current quote for that stock, a float value.

该操作等待一个字符串，被解释为股票的报价机符号，然后返回当前该股票报价，一个浮点值。

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You will define a string to be a QUOTED_STRING if it begins with a quote, ends with a quote and has any other character in between.

如果您定义一个以引号开头，以引号结尾并在其中包含任何其他字符的字符串，那么该字符串就是一个QUOTED_STRING。

youdao

The echo command expects one or more strings, so this line produces an error complaining about the missing closing quote on (what Vim assumes to be) the second string.

echo 命令要求一个或多个字符串，因此此行代码将生成一个错误，指出第二个字符串缺少一个右引号（Vim 是这样认为的）。

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