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abbr. 日本商务改善协会（Better Business Bureau）；血脑屏障
🗣️ 情景例句
You tried, Mom.
尽力了， 妈妈。
How much is the electricity bill a month?
每个月电费要多少钱？
local epidemics of this disease could be created.
就可以使这种疾病在一个地区蔓延起来。