Bbbs
abbr. 血脑屏障；日本商务改善协会（Better Business Bureau）
🗣️ 情景例句
I'd better unpack.
我还是先把行李打开吧。
Would you be so kind as to open this window for me? It's stuck.
你能为我打开这扇窗户吗？ 它粘住了。
Was there a message?
留话了吗？