Rns
[医][=reference normal serum]参考正常血清
🗣️ 情景例句
You're very lucky to have a caring family.
你很幸运有一个温馨的家庭。
You'd have a better chance of catching the train if you took a bus to the station instead of walking.
如果你不是步行而是乘公共汽车的话，那你就比较有可能赶上火车。
We only need to put the candles on it, now.
“我们现在只需把蜡烛插上就 行了。”