A neutron is simply a neutral particle in the nucleus of an atom.中子就是原子核里不带电的粒子。Neutron is neutral and slightly heavier than the proton.中子是中性的,比质子略重.These are far outweighed by the benefits of the neutron activation meth...
They placed very stable and accurate atomic clocks on regularly scheduled jet airliners.他们将非常稳定、准确的原子钟装在定期飞行的喷气式班机上.The flier flew a new - type jet plane.飞行员驾驶一架新式喷气机.It is becoming accepted practice that jet aircraft mu...
我把他们的聚会弄砸了,这个罪可怎么赔得起呀?How can I ever make amends for ruining their party?总有人干这种没头没脑的事，把你的事情全弄砸。Somebody goes and does something mindless like that and just destroys everything for you.这次我不需要你告诉我,我怎么把事情弄砸了.This is one tim...
A short trot down the sloping greensward brought Simon to the massive gatehouse.Simon跑下满是青草的斜坡,来到巨大的警卫室.Need makes the old wife trot.事急老妪跑。They have won three races on the trot.他们在比赛中接连赢了三次.The horse broke into a brisk t...