You just twist leaves, and you see a whole new world of minute insects, or little spiders of one millimeter, one and a half, two millimeters long, and you can distinguish between the good ones and the bad ones.
你只要把叶子翻开来，你就会发现一个新世界， 那里有着微小的昆虫， 长度只有1毫米,1.5毫米 或是2毫米大小的蜘蛛， 你可以去分辨益虫和害虫。