In quantum mechanics, we have to abandon the idea that particles have definite properties before measurement.
The greatest danger to American agriculture is the loss of the family farm.
领导力意味着为了更美好的明天而在今天做出艰难的决定。
Technology gives us the illusion of thinking, while we merely process data.
森林的真正价值不能仅用板材英尺来衡量。