- = backwards and forwards [見 backwards]
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backward and forward中文什么意思
例句與用法
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- it moves, it vibrates backwards and forwards .
它在運動，前后震動。 - she was always coming backwards and forwards .
她經(jīng)常來來往往。 - he took up the knife and drew it backwards and forwards over his throat .
他便拿起刀，在他的喉嚨前面劃來劃去。 - it is true that system could oscillate backwards and forwards in this dead zone .
不過，系統(tǒng)在這個死區(qū)內(nèi)可能會發(fā)生來回的振蕩。 - they know that periodic table backwards and forwards .
他們能把元素周期表倒背如流.