translation.en: And last year we thought very, very hard, how can we resolve this problem? Until we realized that just like us, we have a unique smell, that mosquito larvae also have a very unique smell.
translation.zh: 去年，我们绞尽脑汁 来找解决之道。直到我们意识到 就像人类有独特的气味一样 蚊子幼虫也有独特的气味