1. The beaver chews down trees to get food and material with which to build its home.
1.海狸通过嚼烂树木来获得食物和建造它们自己的窝的材料.
2.Poodles were once used as retrievers in duck hunting, but American Kennel Club does not consider them sporting dogs because they are now primarily kept as pets.
2.狮子狗一度被用来作为捕猎野鸭的猎狗,但是美国狗俱乐部不再把它作为运动型的狗,而是作为一种主要宠物来喂养.
As a result of what is now know in physics and chemistry,scientists have been able to make important discoveries in biology and medicine.
3.在物理学和化学中作为众所周知的结果,科学家们已经在生物和医药学上有了重大的发现.
