Based on Chuang's observations, "At sunrise, when the sky is just becoming light, the insects hide among the leaves. Therefore, if you spray insecticides during the day, you just won't hit them, and the pesticides end up in human stomachs instead," Professor Wu says.
根據莊玉隆的觀察，「太陽昇起，天色剛亮，蟲就躲到葉片裡去，所以白天噴藥根本噴不到它，最後都進了人的肚子」，吳三和說。