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）。
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.
Gnuplot允许您指定字符串，用于表示缺少的数据点。
Gnuplot lets you specify a character string to mean a missing data point. For example.
echo后面的字符串的末尾缺少一个双引号（"）。
A double quotation mark (") is missing at the end of the string being echo-ed.
注：在开始和结束的标签组成中缺少关键字符，比如：一个右尖括号、属性值不匹配或者双引号不完整。
Note: Start and end tags that are missing a critical character in their formation, such as a closing Angle bracket or a mismatched attribute value quotation mark are not complete.
字体和字符集的支持，对任何一个GUI系统来讲都是不可缺少的。
It is necessary for any GUI system to provide the support for font and charset.
您可以简单地添加缺少的字符，或选择一个现有的特色，并修改其外观。
You can simply add missing characters, or select an existing character, and modify its appearance.
此正则表达式匹配正常HTML字符串时工作良好，但是如果目标字符串缺少一个或多个标签时，它就会变得十分糟糕。
This regex works fine when matching a suitable HTML string, but it turns ugly when the string is missing one or more required tags.
此正则表达式匹配正常HTML字符串时工作良好，但是如果目标字符串缺少一个或多个标签时，它就会变得十分糟糕。
This regex works fine when matching a suitable HTML string, but it turns ugly when the string is missing one or more required tags.
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