Subnanogram
低于毫微克(数量级)
🗣️ 情景例句
I see what you mean.
我懂你的意思。
Tom graduated from college at a very young age.
汤姆很年轻就从大学毕业了。
Well,you mustn't play in the road.It's dangerous. A car may hit you.
嗯，你不可以在路上玩球。那是很危险的。汽车会撞着你。