中心力是由球对称的势能函数而来的力.A central force is one derived from a potential - energy function that is spherically symmetric.有心力是一种径向力,它的大小只取于离原点的距离.A central force is a radial force which depends only on the distance from the orig...
He had been running uphill a long way...他已经跑了一段很长的上坡路。It's an uphill battle but I think we're going to win.虽然这是一场艰苦的斗争，但我相信我们会取得胜利。He has an uphill battle against rheumatism.他与风湿病作艰苦顽强的斗争。After the recent scand...
The aim of discipline is to teach children to behave acceptably.纪律的目的是教育儿童举止得体。It is shocking that humans can behave with such bestiality towards others.令人震惊的是，人竟然能对同类下此毒手。It's incredible that Peter can behave with ...
污染鸡蛋在孵化器里会引起鸡蛋爆裂的连锁反应.Contaminated eggs in the incubator set off a chain reaction of exploding eggs.种种迹象表明,孵化器和风险投资正逐渐走向融合.The venture capital mixed business incubator is the current new hot point.了解学生领导的孵化器所面临的报酬和潜在的陷阱....
The army defends the people from harm.军队保护人民免遭伤害.But it might make some unpleasant talk if he really defends the suit.但是,倘若他真的提出反诉,就会引起一些令人不快的议论.The author defends herself against charges of racism by noting that blacks ...