Packs
n. 生存集群；包裹；资料袋（pack的复数）
🗣️ 情景例句
Have you ever taken Cathay Pacific?
你有没有搭过国泰航空公司的班机？
We're jumping about in excitement at the discovery.
我们因为这一发现而兴奋得手舞足蹈。
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。