He cleaned the flakes away with his coat sleeve.他用大衣袖子把碎屑掸掉。Bold as you please, she grabbed me by the sleeve.她真够大胆的，竟抓住了我的衣袖。He wore a black band on the left sleeve of his jacket.他在夹克衫的左袖上戴了一条黑箍儿。...
它的致密的形态是其失活的反映.Its compact appearance is a reflection of its inactivity.如果这些酸贮藏在细胞质中,细胞质的酶类将要失活.Inactivation of cytoplasmic enzymes would occur if the acids were stored in the cytoplosm.简要介绍了催化剂的再生和防失活等方面的技术.The methods ...