on and off怎么读？

Sam was flicking a flashlight on and off.萨姆啪啪不停地把手电筒开了又关。It rained on and off all day.哩哩啦啦下了一天雨.This low-impact exercise involves stepping on and off a platform following routines to music.这一低强度锻炼的内容包括在伴随音乐做完固定动作之后重复踏上踏下...

不时，断断续续地，间歇地，启闭...

n.（土壤中的）无效水量...

adj.（杂志或图片）以表现裸体女子为特色的...

What about water supply , the availability of cultivable land or jobs?那供水系统呢, 能耕种的土地和可获得的工作 呢 ?This has provided valuable data for extension of cultivable land.这样就提供了有关扩大可耕地面积的宝贵数据.While China has plenty of cultivable la...

“使发炎”的英语可以翻译为：[医]irritate ...

determined的近义词/同义词有：serious, resolved, firm, convinced, sure, resolute, insistent, serious, resolute, emphatic, decided, constant, zealous, iron, stony, sure, resolved, decisive, fixed, firm, definitive, convinced。adj.de...

retake的第三人称单数（三单）为：retakes...

“切”的拼音为：qiè...

“敌蚊隆”的英语可以翻译为：[机] diflurone ...

今天对我来说真的有点儿白白浪费了。Today was really a bit of a write-off for me.有些士兵有点儿不耐烦。There is a certain impatience among some of the soldiers.即便有点儿失望，也肯定是暂时的。If there was any disappointment it was probably temporary....

The underground pipeline colligate alure in city Utility tunnel.城市地下管线综合管廊俗称共同沟.Now we introduce briefly correlated study future, pointing out the colligate therapy trend of SVCS.现简要介绍近期国内外相关研究治疗, 指出本病综合化治疗的趋势.To judge i...

homokaryocyte的音标：homokaryocyte的英式发音音标为：[həʊmə'kærɪəʊsaɪt]homokaryocyte的美式发音音标为：[hoʊmə'kærɪoʊsaɪt]...

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桑寄生科...

overburden的现在进行时为：overburdening...

常常是用离心法分段收集沉淀的.Precipitates are usually collected by centrifugation at intervals.它可以用离心法分离.This can be separated by centrifugation.结论: 密度梯度离心法分离获得的人胚胎骨髓间充质干细胞纯度高.Conclusion: High purity of MSC can be obtained by density ...