An atoll is a ring - shaped island that encloses a central lagoon.环礁是一座环状的岛屿,中心围起一团海水形成泻湖.The wall encloses the hospital.围墙将那所医院围在里面.A wall encloses the park.墙围着公园.An unspoilt coral reef encloses the bay.未受破坏的珊瑚礁环绕在海湾周围。...
This reaction, called the Hofman elimination, is quite analogous to the dehydrohalogenation of an alkyl halide.这个反应称为Hofman消除反应, 它很像卤代烷的脱卤化氢反应.This paper discussed three methods of producting vinyl etherspreparation from...
卡车倒车和掉头的时候，我听见发动机的轰鸣声。I heard the engines revving as the lorries backed and turned.他听见从远处什么地方传来打字机的嗒嗒声。From somewhere distant he heard the clatter of a typewriter.然后那个伐木工脱手甩出了斧头。哐！每个人都听见了。Then the woodcutter let his axe ...
水果的美味和它那本质的部分，在装上了车子运往市场去的时候，跟它的鲜丽一起给磨损了，它变成了仅仅是食品。The ambrosial and essential part of the fruit is lost with the bloom which is rubbed off in the market cart , and they become mere provender.雄鸟通常比雌鸟大,颜色更鲜丽.The male bird...