He keeps a parrot in a birdcage in his living room.他在客厅的鸟笼里养了一只鹦鹉.He threw the birdcage away with anger.他气得把鸟笼都扔了.Ling Feng covered the birdcage with a piece of black cloth.凌锋用一块黑布将鸟盖上了....
Bombing had made roads and railways unusable.轰炸导致公路和铁路都无法通行。The point of degradation, due to attenuation or distortion, at which a signal becomes unusable.由于衰减或失真使得信号变得不能使用的那个退化点.Mortality is the number or volume of tree...
Only the styles are left sticking up from the receptacle and ovary.在花托和子房上面只剩下花柱.The fertilized ovule becomes the seed, and the ovary becomes the fruit.已受精的卵子成为种子, 而子房变成了果实.Polycystic ovary syndrome ( PCOS ) is the most ...