on and off怎么读？

不时，断断续续地，间歇地，启闭...

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...

飞标: 弯曲形投掷尖刺武器.澳大利亚原住民多在狩猎及战争中使用之.Boomerang: Curved throwing stick used chiefly by the aborigines of Australia for hunting and warfare....

Every aspect of the original has been closely studied and painstakingly reconstructed.原作的每一细节都经过了仔细研究,费尽苦心才得以重现.The house fell into disrepair but a group of preservationists have reconstructed the roofs.这座房子年久失修，但一群古建筑保护...

The key pests and rat and pine moth, forest rats, defoliator of the poplars , bristletail.二是松毛虫 、 森林鼠害 、 杨树食叶害虫等常发性病虫害;三是小蠹虫 、 萧氏松茎象等钻蛀性害虫....

Alexander的音标：Alexander的英式发音音标为：[ˌælɪg'zændə]Alexander的美式发音音标为：[ˌælɪɡ'zændɚ]...

n.意大利人adj.杜松子酒的，有杜松子酒味的...

n.短语( phrase的名词复数 )，成语，说法，乐句...

“衰落”的拼音为：shuāi luò...

electrodynamic的音标：electrodynamic的英式发音音标为：[ɪˌlektrəʊdaɪ'næmɪk]electrodynamic的美式发音音标为：[ɪˌlektroʊdaɪ'næmɪk]...

“脚印”的英语可以翻译为：footprint，footmark，track，pedograph，pug ...

“含蓄”的拼音为：hán xù ...

Jakob的音标：...

hospital的近义词/同义词有：clinic, sanitarium, sanitarium, clinic, institution, home。n.hospital的近义词（医院;救济院）：clinic, sanitarium。hospital的近义词（其他释义）：sanitarium, clinic, institution, home。...

n.船坞，造船厂...

The telex chattered all day and night with news bulletins.电传机没日没夜“嗒嗒嗒”地接收新闻稿。Erica was friendly and chattered about Andrew's children.埃丽卡很和气，不停地念叨着安德鲁的孩子们。They chattered away happily for a while.他们高兴地闲扯了一会儿。...

被控告的这些男子受到相对较轻的判决。The accused men have been given relatively light sentences.较轻的推进器采用液态氢, 较重的采用自燃推进剂.The lighter version used liquid hydrogen, the heavier used hypergolic propellants.这些比较告诉我们,土星由较轻的物质构成.These comparisons...