Partical velocity
[电] 粒子速度
🧩 词语组成解析
[电] 质点
🗣️ 情景例句
Is there a limit to how many I can purchase at this price?
我买这种东西在数量上有什么限制吗？
To chase butterflies
追逐蝴蝶
Many of them have to wait six months for their goods.
许多顾客不得不等上半年才得到所需的商品。