Ppb
[化] 十亿分率
🗣️ 情景例句
Thank you all the same.
不管怎样都要谢谢你。
I hope that will not cause you too much trouble.
我希望那不会给你添太多麻烦。
or those inviting 'our camping friends' to a dance or a boat trip are printed not only in French or Italian or Spanish,
和邀请露营朋友参加舞会、乘船观光的招贴不仅印成法语、意大利语、西班牙语，