Rdna
abbr. recommended daily nutrient allowance 推荐每日营养素供给量
🗣️ 情景例句
He has enormous funds at his command.
他掌握着巨额资金。
It's hard sailing when there is no wind.
没有风难航行。
Yes, I have.I think that.I've hurt my back.
是啊，摔伤了。我想我把背摔坏了。