尿液是无菌的。Urine is sterile.这个盖子严实地盖在奶瓶上,保持奶嘴无菌.This top fits over the bottle and keeps the teat sterile.手术室应该是个无菌的环境.An operating theatre should be a sterile environment....
The old hunger for voyages fed at his heart.以前周游四方的渴望现在又打动了他的心.Hunger finds no fault with the cookery.饥不择食。There is hunger in many parts of the world, even in rich countries.世界上很多地方，甚至在富有的国家里，都有人忍饥挨饿。...hunger pangs.阵阵饥饿...