字符串效率较低，但更为明确。

Strings are less efficient but less ambiguous.

youdao

使用文本索引使文档搜索的效率大大提高，因为不需要像进行子字符串匹配时那样在查询时检查文本数据。

Using a text index makes document search much more efficient, as the text data does not need to be examined at query time like it is done with sub-string matching.

youdao

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。

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

youdao