Ppb
[化] 十亿分率
🗣️ 情景例句
How are you doing, Richard?
现在怎么样， Richard？
We would appreciate it if you let us know whether you allow cash or trade discounts.
若能告知你方是否给现金折扣或商业折扣，将不胜感激。
We'll need all our orders packed that way from now on.
今后我们所有的货都要照样包装。