气候变化不是未来的威胁,它正在改变我们今天的田地。
Climate change isn't a future threat - it's reshaping our fields today.
It is human nature to think wisely and act foolishly.
数学是一门活生生的学科,随着新的思想和发现不断演变。
A ship is always referred to as "she" because it costs so much to keep one in paint and powder.