And when his audience grew bored, he would spring into the air and do a back flip with a half twist.
当他的观众感到无聊时,他会跳到空中,做一个半扭的后空翻
科学是一项协作的努力,重大的发现不会孤立地发生。
卡塞尔文献展必须始终是一种冒险,而不是例行公事。
The act of writing is an act of rebellion.
Investing in clean coal technologies isn't an expense—it's an investment in our future.