Hst
abbr. 超高音速运输机（Hypersonic Transporter）；高速试验机（High-Speed Tester）
🗣️ 情景例句
You know something, Ellen?
知道一件事吗， Ellen？
I locked all the doors.
我锁好了所有的门。
Whenever Arthur was angry, he would walk out of the room.
阿瑟生气时，就会出去。