叫他走吧，我不要这个不中用的人。

I have no use for the sad sack of a man.

youdao

我们都认为她是一个不中用的人。

We all think that she is a person for nothing.

youdao

随着年龄的增长，两组人群都变得越来越不中用了。但是对坚持跑步的人来说，残疾发病的时间来得更晚些，平均要晚16年。

Both groups became more disabled with age, but for the runners the onset of disability started later - an average of 16 years later.

youdao

随着年龄的增长，两组人群都变得越来越不中用了。但是对坚持跑步的人来说，残疾发病的时间来得更晚些，平均要晚16年。

Both groups became more disabled with age, but for the runners the onset of disability started later - an average of 16 years later.

youdao