相关列句
You can imagine a bead with a wire going through it and the bead can only slide back and forth.(你可以想象一个有金属丝穿过的珠子而且这个珠子只能前后滑动。)
He continued walking back and forth, muttering to himself; he had forgotten the King entirely.(他不断地走来走去，喃喃自语；他完全忘记了国王。)
The pendulum swings back and forth.(这就像单摆一样来回摆动。)
The prosecution and defence were bandying accusations back and forth.(原告与被告你来我往，互相指责。)
If two flying insect populations took up residence in separate nearby valleys, chances are that individuals from each population would fly back and forth, continuing gene flow.(如果有两个飞行昆虫种群居住在相距不远的不同山谷中，那么任一种群中的个体都有可能来回飞行，从而使基因流动继续。)
The people swayed back and forth with arms linked.(人们手拉手前后摇摆着。)
She passed the needle through the rough cloth, back and forth.(她用针在那块粗布上来来回回地穿进穿出。)
They continue calling back and forth until they all find each other again.(他们不停地来回打电话，直到他们再次找到彼此。)
From what I remember, water changes back and forth from water in lakes and oceans to vapor, and then back to water again when it falls as rain or snow, as precipitation.(根据我的记忆，水往复地变化，从湖泊和海洋里的水变成水蒸气，然后当它以雨或雪——也就是降水的形式落下时又变成水。)
So energy can go back and forth.(所以能量可以来来往往。)
back and forth是什么意思 back and forth在线翻译 back and forth什么意思 back and forth的意思 back and forth的翻译 back and forth的解释 back and forth的发音 back and forth的同义词
