"Memory is a fragile thing, but it is also our most powerful tool for understanding the past."
记忆是脆弱的，但它也是我们理解过去最强大的工具。
I don't think President Bush is doing anything at all about Aids. In fact, I'm not sure he even knows how to spell Aids.
自由的价值只有失去时才真正懂得。
爱是一种冒险，但值得一试。
我相信艺术有力量改变世界，一次一个故事。
"RNA interference is a fascinating process that has opened up new avenues for understanding gene regulation and has potential therapeutic applications."
命题是断言某事是或不是事实的陈述。
The soil is not just dirt—it's the foundation of civilization.
有时候，只要你坚持下去，活下去，就已经是非凡的成就了。
I don't let anyone take away my hope.