我们几乎无法避免这样的推论:光是由同一种介质的横向波动组成的,这种介质也是电和磁现象的原因。
The dairy industry is related to national health. We must hold ourselves to the highest standards.
You have to believe in yourself when no one else does.
增长不仅仅是数字的问题;它关乎创造持久的价值。
Science should serve humanity, not the other way around.