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...
That might merely have been malicious gossip.那也许仅仅是些不怀好意的流言蜚语罢了。We gossip about them and vice versa.我们议论他们,他们也议论我们.She was not interested in the trivia of gossip.她对琐碎的流言蜚语不感兴趣.Carrie became wise in theatrical lore, heari...