shells是什么

shells是什么 shells shells中文是什么意思 mugs shells stickers coins how many shells中文是什么意思how many shells< >yougot?twenty These shells are mine.(改为疑问句）_____ these shells ______? He collected shells two weeks ago.同意句It____two weeks ____he collected shells. shells有贝壳的意思吗 贝壳shell可数吗,shells有没有贝壳的意思的,love shells怎么翻译.重点是那个“s” 英语翻译Temperature cross in single multi-tube pass shells should be avoided by the use of shells in series or by pure counter flow shells How long have you been collecting shells?翻译 英语：how long have you been collecting shells?主要语法 have/you/how/long/been/shells/collecling/?连词成句 英语在海边拾贝壳 collect shells ___________ there are shells( ),( )on the beach怎么填 l have soft toys and many shells翻译这句话 shells,the,look,for,is（连词组句） 能否直接回答:No,she is collecting shells. I have been collecting shells for three years.和 I have collected shells for three years.在语法和意