Rns
[医][=reference normal serum]参考正常血清
🗣️ 情景例句
They have to be here.
它们肯定就在这儿。
He's not in. May I take a message for him?
他不在，我能替他捎个口信吗？
It will be open to children with disabilities.
这所学校要对残疾儿童开放。