Blackart
n. 妖術,魔法
??? 情景例句
What is it?
是什么主意？
I'm boating at the lake.
我在湖邊劃船。
he realizes its volume, as the space that the shape displaces in the air.
他能意識到物體的體積，那就是它的形狀在空氣中所占的空間。