总而言之，这是一本通俗而务实的物理入门书。On balance, the book is a friendly, down-to-earth introduction to physics.他是物理尖子.He was the top student in physics.我对物理和化学不是太感喜爱。I wasn't too keen on physics and chemistry....
When things go wrong, all of us naturally feel disappointed and frustrated.出问题时，我们大家自然都感到失望和沮丧。She will be disappointed if her feelings are not returned.如果她的感情得不到回报，她会感到非常失望。I was disappointed whenever the cook found fau...