免疫系统是抗击癌症的关键。
在一个国家中,一个人的自由止于另一个人的自由开始之处。
We must mine coal responsibly today so that our children inherit both energy security and a healthy environment.
艺术家必须是神秘的守护者。
Diversity in thought leads to innovation in action.
Silence is not the absence of sound, but the presence of something deeper.