男孩和他的心已经成为了朋友，彼此都无法背叛对方
The boy and his heart had become friends, and neither was capable now of betraying the other.
The only way to save a rhinoceros is to save the environment in which it lives, because there's a mutual dependency between it and millions of other species of both animals and plants.
药品生产的质量不容妥协；它是信任的基石。
I was born with an enormous need for affection, and a terrible need to give it.