是be useful for 还是be useful to?
是be useful for 还是be useful to?
be useful to和be useful for的区别
be useful to和be useful for的区别?
be useful for=什么?
be useful for sb.对…有好处; be useful to sb.对某人有用;
请问be useful for sb是不是短语
be useful to的中文解释
these ways seem to be useful
To be useful(句子开头)怎译?
be useful是什么意思
be more useful是什么意思
Some men seek office,not to be useful to the state,but for t