Picolinic acid
[建] 啶甲酸-[2]
🧩 词语组成解析
🗣️ 情景例句
African athletes are good at track and field events.
非洲选手擅长田径项目。
An idle youth, a needy age.
少壮不努力，老大徒伤悲。
The dog's in the garden, too.It's running across the grass.
狗也在花园里。它正在草地上跑，