Pbf
[医][=peripheral blood flow]外周血流（量），末梢血流量
🗣️ 情景例句
One week after I have submitted my resignation paper.
在我提交辞职信一星期后吧！
We never know the worth of water till the well is dry.
井干方知水可贵。
That is John Smith,isn't it?
你是约翰。史密斯，对吗？