You can really work up a sweat doing housework.做家务真的会让人大汗淋漓。Why do you leave all the hard work up to your mother?你为什么把所有难做的事都留给你母亲?They will work up all these stones in building the bridge.他们将把这些石子全部用来造桥....
校内的书店比较贵 吗 ?Is the campus bookstore more expensive?之后可步行至北京大学校内的食堂, 或周边的饭馆享用午餐.May then walk to the campus of Peking University the cafeteria, or restaurant around lunch.有些人参加校队的选拔;有的则加入校内的运动联盟.Some try out for the schoo...
卵最后在母兽的育儿袋内孵化了.The eggs eventually hatch inside the mother's pouch.怀孕的母兽总是生下一双幼兽,一公一母.Pregnant females always give birth to twins: a female and male.母兽一直都在窝边守护着仔兽的安全.The mother animal constantly safeguards her baby....
The velocity of the fluid is inversely proportional to the spacing of the streamlines.流体的流速与流线的间距成反比.The amount of force needed is inversely proportional to the rigidity of the material.需要的力度与材料的硬度成反比.The availability of...