be in the process of doing sth.=be doing sth.正在作
介词搭配
合适的,相关的
be appropriate for
be suitable to/for
be compatible with
be relevent to
be in the process of doing sth.=be doing sth.正在作
介词搭配
合适的,相关的
be appropriate for
be suitable to/for
be compatible with
be relevent to