Hetu
abbr. Height Equivalent to Transfer Unit 当量传质单元高度
🗣️ 情景例句
When I came here,
当我初到这，
Can I have a day off?
我能请一天假吗？
She didn't visit her step-mother much, though I believe that they used to speak on the phone from time to time.
她不常看望她的继母，虽然，我相信她们过去时不进在电话里聊一聊。