您输入的应该是符合CSS3颜色值标准的有效字符串。下面的例子都表示同一种颜色。

The valid strings you can enter should, according to the specification, be CSS3 color values. Each of the following examples describe the same color.

youdao

数据库名称无效。需要非空字符串。请输入使用有效字符的名称，然后重试。

Invalid database name. A non-empty string was expected. Enter a name using valid characters and try again.

youdao

It happens to be better suited for manipulating strings than numbers, for example, but it's really a general-purpose language.

例如它恰好,处理字符串,比处理数字更有效率，但是它确实是一种面向面很广的语言。

麻省理工公开课 - 计算机科学及编程导论课程节选