However, momentum is always conserved in a collision, whether or not the collision is elastic.然而, 不管碰撞是不是弹性的, 在碰撞过程中动量总是守恒的.The elastic interaction between a wedge disclination dipole and an interfacial crack was investi...
The airline hopes to break even next year and return to profit the following year...那家航空公司希望明年实现收支相抵，在随后一年重新盈利。Tests were carried out by teachers on the entire cohort of eight to nine year-olds in their third year at pri...
他们都是多产的饲养员，养的母鸡很多都可以下6个蛋之多。They are prolific breeders, with many hens laying up to six eggs.小马驹和小牛犊围着饲养员欢蹦乱跳.The colts and calves are gambolling round the stockman.他找到了一份当饲养员的工作.He found a job as a keeper....
Paintwork on the corner of a stairway tends to get nicked and scratched as people pass by.随着人们的走动,楼梯转角上的油漆慢慢地有了缺损和擦伤....a stairway in the rear of the building.大楼后面的楼梯...the opening chords of 'Stairway to Heaven'...
Have customers been fully apprised of the advantages?顾客们已充分了解这些好处吗？We were fully apprised of the situation.我们完全获悉当时的情况.I have apprised him of your arrival.我已经告诉他你要来....