For as long as I can remember, Mom has been a middle-aged woman, but no one told me she used to be a young girl.
从我们记事起,妈妈就是一个中年妇女了,可谁又知道,她也曾是个花季少女。
The only way to do great work is to love what you do.
现代物理学的挑战不仅在于找到答案,还在于提出正确的问题。