She shows great diligence in her schoolwork.她上学非常用功。My mother would help me with my schoolwork.我的母亲会帮我做功课。Family frictions can interfere with a child’s schoolwork.家庭中的争吵会影响孩子的学业。He was shattered and too tired to concentr...
Fortunately, he died nobly at the Alamo , fighting for Texan independence, and thus secured immortality.幸而他在得克萨斯争取独立的战争里在阿拉莫英勇战死, 因而获得不朽.The Alamo was the first defense against the Mexicans.阿拉摩之役是抵抗墨西哥人的首次防卫战.Have you ev...
The enemy had expended all their ammunition.敌人已耗尽所有的弹药.There was ammunition lying all over the place.军火堆了遍地。Then the sound of rumbling thunder reached the watchers on the shore, as cargo, ballast, ammunition and 400 peop...
对于α-氨基仍采用Fmoc保护策略, 侧链氨基用二碳酸二叔丁酯引入叔丁氧羰基来保护,侧链胍基用酸敏感保护基2,2, 4,6,7-五甲基二氢苯并呋喃-5-磺酰基来保护.Fmoc, Boc and Pbf were used respectively to protect α - amido, side amido and side guanidine group....