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
The media is amazing these days, we can watch world changing events happen live right in front of our eyes.
现在媒体却实很神奇，我们能亲眼目睹世界上刚发生的事情。
Seeing is believing.
眼见为实。
Insularity and self-containment, it is argued, go hand in hand.
他们争论说，心胸狭窄和自我封闭是并存的。