Hydroaromatic
氢化芳族的
🗣️ 情景例句
a way to encourage reading.
鼓励阅读的办法。
The agricultural region is centered largely in the north.
那里的农业区大部分集中在北部。
Modern industry is based on the conception of the maximum production at lowest cost,
以最低成本获取最多产品，