Predevelopment
前期开发; 预研
🗣️ 情景例句
His collection of paintings is most impressive.
他的绘画收藏令人叹为观止。
You forgot to fasten the collar buttons.
你忘了系鞋带。
It is harvest time, and all the farmers are very busy.
因是收获季节，所有的农民都很忙。