Pneumatometer
n. 肺活量计
🗣️ 情景例句
Are you kidding? Relax?
在开玩笑吗？ 放轻松？
What's the typical farm product in this region?
这个地区典型的农产品是什么？
In his twenties Frank used to make spare parts for aeroplanes.
20多岁的时候，弗兰克曾生产飞机零配件。