shǐ / yòng / ǎi / zhuàng / sù / qián / gōng / zuò / rén / yuán / xiān / jiǎn / chá / tiān / qì / hé / yòng / liàng

使用矮壮素前，工作人员先检查天气和用量。

Before using chlormequat, the workers first checked the weather and the amount to apply.