The summations of forces in this and that directions must be zero.在这个和那个方向上的合力必定为零.Summations are almost invariably indicated ellipses instead of the more prevalent sigma notation.在表示“连加”的式子中,几乎一成不变地使用省略号来代替更为流行的“∑”符号....
Wally was laughing fit to burst.沃利快要笑破肚皮了.He carried on telling a joke, laughing his head off.他继续讲笑话，自己笑得前仰后合。When I stepped into her box, Marguerite was laughing uproariously.当我走进包厢的时候, 玛格丽特放声大笑.We all just cracked up l...
在这片以石墙隔出巴掌大的农田的乡村，驴子比汽车还多。Donkeys outnumber cars in this landscape of tiny stone-walled fields.有些中世纪的城市用驴子或水牛竞赛.Some medieval towns raced donkeys or buffaloes.这头驴子正在田野上吃草.The donkey is eating grass on the field....
For motion is nothing else than the reduction of something from potentiality to actuality.运动只是将事物的潜在性变为现实性而已.Venture capital is characterized by high - risk, high - return and high growth potentiality.风险投资具有高风险 、 高收益、高增长...