颊窝毒蛇的毒牙是长的空心管子.The fangs of pit vipers are long, hollow tubes.只有四分之一的蛇具有毒液和毒牙.Venom and fangs are found in only a quarter of all known snakes.在蛇的进化史上,毒牙的出现是新的进步.A more recent advance in the evolutionary story of snakes i...
在脱氨作用中, 分子 含氨基 的部分被移去.In deamination, the nitrogen - containing amino portion of the molecules is removed.叠氮还原是向有机分子中引入氨基的重要方法.Reduction of azides is an important method to introduce amino group to organic molecules.采购产品...
我大致了解情况会有多困难。I have a fair idea of how difficult things can be.大致的估计费用为每月9,000万美元。Ballpark estimates indicate a price tag of $90 million a month.该书描述了4个角色，大致上以我的几个叔叔为原型。The book follows four characters, loosely based on ...
He won't say which programmes are for the chop.他不愿说哪些项目将被毙掉。Roughly chop the tomatoes and add them to the casserole.把西红柿大致切一切，然后放到炖锅里。Sometimes they have to chop down a tree for firewood.他们有时只好砍树当柴烧。...
停车场场主有保护停放车辆的法律责任。Car park owners should be legally responsible for protecting vehicles.能清楚地看到一名警察记下了经过车辆的车牌号。One policeman was clearly visible noting the number plates of passing cars.车辆的喧闹声已渐渐远去，变得模糊起来。The clamor of tr...