Note the brackets (not parentheses), which are required to compose an anonymous list reference.

注意方括号(不是圆括号)中需要组成一个匿名列表引用。

youdao

Note the brackets (not parentheses), which are required to compose an anonymous list reference.

注意方括号(不是圆括号)中需要组成一个匿名列表引用。

youdao