Naf
abbr. negative acting factor 负作用因子; nonappropriated funds 非拨入经费
🗣️ 情景例句
One of my patients has a high fever,
我的一位病人发高烧，
It is too late to cast anchor when the ship is on the rock.
船触礁后在抛锚，为时已经太晚了。
yes, there is.
是的，有一条。