求教back and forth his head swiveled,desire maxing,resolution waning.语法back and forth his head swiveled,desire maxing,resolution waning.他摇头晃脑,欲望在膨胀,意志在萎缩.这一句中的 maxing 和waning 是动名词还现在分词

求教back and forth his head swiveled,desire maxing,resolution waning.语法back and forth his head swiveled,desire maxing,resolution waning.他摇头晃脑,欲望在膨胀,意志在萎缩.这一句中的 maxing 和waning 是动名词还现在分词 go back and forth back and forth 歌词 back and forth withone moving back and forth混分者死开, (back and forth)这个英文是什么意思? back and forth可以做名词吗 back -and- forth demodulator何意 skip back and forth to the rhthmy Back and forth they argued翻译 The road moves back and forth and around corners是什么意思? backward and forward和back and forth的区别 The thin boy glanced swiftly back and forth between Jacoband me,while the brawny boy kept his eyes on me,a slow smile spreading across his face.forth要怎么理解! back and forth rush这个英语单词什么意思? If you love walk back and forth这句是什么意思? She walked back and forth in the streets, we don't have to just email back and forth 以“the train shakes back and forth…”开头的英语完型填空,