B.t.u.
abbr. 英国热量单位（British thermal unit）；英国商务部单位（Board of Trade Unit）
🗣️ 情景例句
What was the weather like yesterday?
昨天的天气怎么样？
Thank you. It was very kind of you.
谢谢，您太好了。
Hello, Jim! Did you have a good time at the cinema?
你好，吉姆！你在电影院过得很开心吧？