able administrator 干练得力的行政官员;
able child 能干的孩子;
able defence 漂亮的辩护;
able doctor 能干的大夫;
able fellow 能干的小伙子
be able to answer 有能力回答;
be able to come 能够来;
be able to cure 能够治愈;
be able to finish 有能力完成;
be able to go 能够去
水利万物而不争,
而万物莫能与之争。