Radial velocity
[化] 径向速度
🧩 词语组成解析
🗣️ 情景例句
Safety first.
安全第一。
This kind of article is often bought as a gift, so exquisite and tasteful design is of prime importance.
人们购买这种商品通常用来赠亲友，所以精美高雅的设计至关重要。
No, it's OK.
没有，还好着呢！