我是一个战士，我喜欢挑战。
Let me explain. I think it would be very unusual for anyone here, or anyone watching, to be envious of the Queen of England. Even though she is much richer than any of you are, and she's got a very large house, the reason why we don't envy her is because she's too weird.
Understanding is the foundation of all wisdom.
物理学的美丽在于它能够用简单的原理描述复杂的事物。
用我们的教学方法，导师教得少，但却观察得多。