那白鹭振翅向湖对岸慢慢飞去.The heron flapped slowly off across the lake.燕子, 野雁和白鹭每年都移居.Swallows, wild geese and egrets migrate every year.那白鹭鼓动着翅膀从水面上飞来.The heron came flapping over the water....
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...