Birds are good pets, they can wake you up by singing in the morning.
鸟是很好的宠物,它们早上的歌声可以将你从梦中唤醒。
He needed a blood transfusion.
他需要输血。
There are even stories of half-trained elephant calves who have refused to feed and pined to death when by some unavoidable circumstance they have been deprived of their own trainer.