这是一般可列举集合，可按群组名称或整数索引来索引。

This is a normal enumerable collection, indexable by either group name and by integer index.

youdao

这是一般可列举集合，可按群组名称或整数索引来索引。

This is a normal enumerable collection, indexable by either group name and by integer index.

youdao