记得那是三年前的一天,我和爷爷在林子里玩耍。由于跑得太快了,我被大树凸出的树根绊倒了。我很生气,爷爷拉着我坐到树根旁,对我说:“你喜欢大树吗?”我回答:“喜欢!因为大树可以吸收二氧化碳,‘吐出’氧气,还可以抵御沙尘暴,防止洪水……”爷爷说:“树的好处很多,但你知道大树 I remember it was three years ago, my grandfather playing in the woods. As I ran too fast, I stumbled upon the protruding roots of the tree. I was very angry, my grandfather took me to the root of the tree and said to me: “Do you like the big tree?” I replied, “Like! Because trees can absorb carbon dioxide and 'spit out' oxygen, they can also withstand dust storms and prevent Flood ... ”Grandpa said:" The benefits of the tree are many, but you know the tree