心理学家必须是一个中立的观察者。
The psychologist must be a neutral observer.
Food safety is the lifeline of aquaculture and must never be relaxed.
译文:君主没有威严而权力旁落左右近臣之手。
善意并不是自己内心发出的,不能保留;行为自身不能够理解和辨别的,不能去做。
"Books are the keys to unlocking our potential for change."