Rns
[医][=reference normal serum]参考正常血清
🗣️ 情景例句
The best we can do is $ 165 per case CIF.
最优惠价格是每箱CIF165美金。
Knowledge is the antidote to fear.
知识可以解除恐惧。
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons.
历史学家迄今认为日历是随农业的问世而出现的，因为当时人们面临着了解四季的实际需要，