Emss
[医][=emergency medical services system]急救医疗服务系统
🗣️ 情景例句
In about 30 minutes.
大约半小时后。
I've got a slight pain in my knee.
我的膝盖有点痛。
and we know something of the great variety of the sea bed's topography.
而且我们对海底地形的千变万化也有了一定的了解。