常見例句The brook warbled over its rocky bed. 小溪潺潺流過多石的河床。A film of mucus and bacteria on a tooth surface. 齒菌斑牙齒表面一層粘液和細(xì)菌的膜She rushed off to work leaving her bed unmade. 她匆忙去上班連床都沒鋪好。Bacteria are too small to see with the naked eye. 細(xì)菌太小,肉眼看不見。A mosquito netting completely surrounds our bed. 一頂蚊帳把我們的床完全圍住了。Many diseases are caused by bacteria. 許多疾病是由細(xì)菌引起的。 返回 bacteria bed