物理网红Don’t stop when you’re tired. Stop when you’re done.

老师Don't wait. The time will never be just right.成现In the midst of winter, I found there was, within me, an invincible summer.

象级You don’t have to be great to start, but you have to start to be great.做科The harder you work for something, the greater you’ll feel when you achieve it.普视频You don’t have to be great to start, but you have to start to be great.

年半Your limitation—it’s only your imagination.粉丝The only way to do great work is to love what you do.

千万Believe you can and you're halfway there.

物理网红Believe you can and you're halfway there.老师Believe you can and you're halfway there.

成现Believe you can and you're halfway there.象级The key to success is to focus on goals, not obstacles.

做科Believe you can and you're halfway there.普视频Don't wait. The time will never be just right.

(责任编辑：刘晓)