Cef
[医][=centrifugation extractable fluid]离心提取液
🗣️ 情景例句
I've only been waiting for an hour.
我已经等了一个小时了。
Why are you frustrated?
你为什么失败？
'To end our special news bulletin,' said the voice of the television announcer, 'we're going over to the macaroni fields of Calabria.
“作为我们专题新闻节目的结尾，”电视广播员说，“我们现在到克拉布利亚的通心粉田里。