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
And this is my sister Susan and her husband Harry Bennett
这是我妹妹Susan和她丈夫Harry Bennett
When the storm broke, I was washing dishes.
当暴风雨开始的时候，我在洗碟子。
Goodbye!
再见！