He is expert in designing lathes.

他对设计车床很内行。

These craftsmen turn wood on lathes.

这些工匠在车床上车木头。

To operate lathes. To cultivate onion.

操作机床。栽培洋葱。

We have designed no less than ten kinds of lathes.

我们设计的车床有十种之多。

A We have not designed more than six kinds of lathes.

我们设计的车床没有超过六种。