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。
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。
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）。
Listing 11 shows an example of the escape sequences for a string that USES a single quote as an apostrophe.
清单11显示了一个转义字符串序列，它使用了一个引号作为省略号。
When there is a double quote at the beginning of a string, any characters after the second double quote are discarded.
当有一个双引号的字符串开始时，双引号的所有字符后，第二次将被丢弃。
When there is a double quote at the beginning of a string, any characters after the second double quote are discarded.
当有一个双引号的字符串开始时，双引号的所有字符后，第二次将被丢弃。
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