牙斑如果不清除就会导致牙齿蛀蚀和牙龈疾病。When not removed, plaque causes tooth decay and gum disease.他们从上层文职部门清除了上千名公务员。They have purged thousands from the upper levels of the civil service.无法把所有的沙砾都清除干净。You'll never quite get rid of e...
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。...
自从他来上大学后，我就对他春心萌动。I've had the hots for him ever since he came to college.摇滚乐自从朋克乐以后就已经过于商业化而缺乏新意了。Rock'n'roll has become so commercialised and safe since punk.该卫星自从两年前发射以来一直没起作用。The satellite had been ina...