How real is such a threat? Several years ago a lethal plant disease struck the papaya crop in Taiwan, killing thousands of trees. Within a few months, this fixture of fruit markets across the island was nowhere to be seen.
幾年前的木瓜輪點型毒素病就是一個慘痛的教訓，這種病害傳染速度極快，短短幾個月內，所到之處，木瓜紛紛感染枯死，少有倖免。