事实上，在美国，犹太人是非犹太人想象中的虚构人物。
物理学中的每一个发现都打开了一个新的问题领域，提醒我们追求知识是一个无尽的旅程。
Science is a bridge connecting the past and the future, allowing us to see further by standing on the shoulders of giants.
化学不仅描述世界，它还改变世界。
You know, in the Middle Ages, in England, when you met a very poor person, that person would be described as an "unfortunate" -- literally, somebody who had not been blessed by fortune, an unfortunate.
