飞絮

zài běi fāng bù shǎo chéng shì zhè jǐ nián kāi shǐ shǐ yòng yī zhǒng néng gòu gěi liǔ xù jié zā de yào jì dāng nián zhù rù shù shēn néng gòu yì zhì xià yī nián de fēi xù shēng chéng

在北方不少城市，这几年开始使用一种能够给柳絮“结扎”的药剂，当年注入树身，能够抑制下一年的飞絮生成。

In the past few years, many northern cities have begun to use a "restricting medicine" which when they inject into the willow trees will prevent the production of the flying willow fuzz.