When you arrive at your room in a hotel, locate the emergency exits. It only takes a minute.
Every discovery in science opens up a new set of questions, and that's what makes it so exciting.
世界上充满了自童年起就再未以开放心灵面对开放门户的人。
我觉得布什总统根本没有为艾滋病做任何事。事实上,我都不能确定他会不会拼艾滋这个单词。