免疫系统就像一把双刃剑;它可以对抗癌症,但也需要被控制。
In the realm of physics, we are not just observers but also creators of the reality we seek to understand.
世界上最美好和最美丽的东西是看不见甚至摸不着的——它们必须用心去感受。
The less secure a man is, the more likely he is to have extreme prejudice.