Heaf
abbr. heavy-end aviation fuel 重尾航空燃料，航空重油
🗣️ 情景例句
It doesn't mean you have to be a doctor.
这并不意味着你一定要当医生。
To teach how to drive a car
教人驾驶汽车
I'm afraid I can't do that right now. the manager isn't here.
恐怕我现在不能退钱给你。经理不在这里。