传回格式化字串的子字串。

Returns a substring of the formatted string.

youdao

传回格式化字串的子字串，选择性包含提示、常值和密码字元。

Returns a substring of the formatted string, optionally including prompt, literal, and password characters.

youdao

传回格式化字串的子字串，选择性包含提示、常值和密码字元。

Returns a substring of the formatted string, optionally including prompt, literal, and password characters.

youdao