Bbbs
abbr. 血脑屏障；日本商务改善协会（Better Business Bureau）
🗣️ 情景例句
Major credit cards are accepted in this supermarket.
这家超市接受大多数的信用卡支付。
I'm easy to please.
我很容易相处。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，