Mef
abbr. maximal expiratory flow 最大呼气流量
🗣️ 情景例句
One thing that makes it easier for you
有一件事可以使你作起决定来比较容易些
Every door may be shut but death's door.
除了死门外，每门都可关。
These attracted many visitors, for they were not only of great architectural interest, but contained a large number of beautifully preserved frescoes as well.
这些教堂吸引大量游客，不仅是因为建筑风格奇特，而且还有大量保存完好的壁画。