an expert in/at/on/with有什么区别?例子:1.an expert in/at teaching small children意思就是说an expert in和an expert at通用对吗?2.an expert in economics3.an expert on foreign affairs4.an expert with the needles
an expert in/at/on/with有什么区别?例子:1.an expert in/at teaching small children意思就是说an expert in和an expert at通用对吗?2.an expert in economics3.an expert on foreign affairs4.an expert with the needles
an expert in/at/on/with有什么区别?
例子:1.an expert in/at teaching small children
意思就是说an expert in和an expert at通用对吗?
2.an expert in economics
3.an expert on foreign affairs
4.an expert with the needles
an expert in/at/on/with有什么区别?例子:1.an expert in/at teaching small children意思就是说an expert in和an expert at通用对吗?2.an expert in economics3.an expert on foreign affairs4.an expert with the needles
expert at:擅长=be good at,do well in
expert on:关于...方面的专家
expert in:熟练于...
擅长于 在某方面是专家 Mr. Dewey, you seem to be quite expert at chopsticks
In,强调专业性;At, 强调优势 On,强调特殊性; With,强调技巧。