be experienced in和be experienced at有什么区别?

be experienced in和be experienced at有什么区别? be experienced in和be experienced at有什么区别? be experienced in sth和have experience in sth区别 be experienced at/in的区别 be talented in还是at 我们老师说和experienced的用法一样be experienced in doing sth是吧? 我在参考书看的是be experienced in+doing sth,be experienced at+sth,但是在老师发的一个教案上是be experienced in+sth,请问怎么回事 have experience in 和be experienced in doing 都是在（做）…方面有经验 但具体有什么区别呢 be well in和be good at be interested in和 be into 区别 be weak in 和be weak at be experienced at doing sth有这个词组吗 be experienced of doing sth有这种形式吗 be made in,be made of和be made from be in bed 和be in the bed的区别~ be engaged in和be trapped in的区别 be caught in 和 be stuck in 的区别 be interesting in和be interested in 的区别 be attracted in 和be absorbed in的区别