She was dancing while someone substituted at the piano.她在跳舞,别人代她弹钢琴.The synthesis methods of melatonin, related tryptaminetryptamine derivatives and substituted indoles are discussed.从人工合成的角度综述了美乐托宁及有关化合物色胺、色胺衍生物及吲哚衍生物的制...
We ventilate a room by opening windows.我们开窗以使室内空气流通.The lungs ventilate the blood.肺吸收新鲜空气使血液净化.He did not think it the job of officials to ventilate their doubts or daydreams.他认为公开提出自己的疑问或不切实际的想法并非官员们的分内之事。...
When would be the best time to start weaning my baby?...什么时候开始给我的孩子断奶最好？Weaning should be a gradual process.断奶要一步步来。Before the weaning trial, the maximal inspiratory pressure ( MIP ) was - 10 cmH 2 O.在尝试脱离呼吸器之前的最大吸气压力为负1...
The police are now following up a number of reported sightings of the missing woman’s car.有多项报告说看见失踪妇人的汽车，警方正在进行调查。There has been a surge of UFO sightings in America.美国不明飞行物目击事件激增。The National Weather Service has reporte...