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
Eating salad is good for your health.
多吃色拉（蔬菜）对你的健康有益。
Could you tell me the cost of production per unit?
请你告诉我每件成品的生产成本好吗？
They're better when they're hot.
趁热吃更好。