by air的同义短语是什么?

by air的同义短语是什么? by chance的同义短语 by now的同义短语, by now同义短语 we went to shanghai by air的同义句 She sometimes goes there by air的同义句 return的同义短语是什么? alone的同义短语是什么 especially的同义短语是什么? 一个英语短语的解释----在线等---by sea = by ship by air = by plane by road 相当于by car 还是by bus 还是别的. be caused by同义短语介词用from的 请问look after的同义短语是什么 think over的同义短语是什么啊? look for的同义短语是什么? both and 的同义短语是什么? a lot的同义短语是什么? prefer to的同义短语是什么 first name的同义短语是什么