Trackwalker
n. <美>[铁]保养或检查铁路的人员
🗣️ 情景例句
And Robbie will love it. Robbie
会喜欢的。
I can recommend their pizza.
那家店的毕节饼值得推荐。
he realizes its volume, as the space that the shape displaces in the air.
他能意识到物体的体积，那就是它的形状在空气中所占的空间。