最幸福的人们并不一定什么都是最好，只是他们懂得欣赏生活的美好。The happiest are not those who own all the best things, but those who can appreciate the beauty of life.许多妇女懂得怎样修自己的车。Many women know how to carry out repairs on their cars.霍顿的软肋在于他不懂得放权。Ho...
The dough was formed into tubular grains by extrusion.药团通过挤压而成管状药.Some other materials are added to facilitate extrusion and other manufacturing operations.添加其它的一些物质是为了使挤压和别的加工过程更为方便.Two common methods of manufacturing p...