Apud
胺前体摄取与脱羧
🗣️ 情景例句
She's moving up the ranks one step at a time.
他一步一步的向上爬。
To gain teaches how to spend.
量入为出。
Firemen had been fighting the forest for nearly three weeks before they could get it under control.
消防队员们同那场森林大火搏斗了将近3个星期才最后把火势控制住。