Htv
abbr. 高空试验飞行器（High-altitude Test Vehicle）；高温硫化混炼硅橡胶（High Temperature Vulcanizing）；混合动力试验车（Hybrid Test Vehicle）；高压伏特计（High-Tension Voltmeter）；自动寻的试验飞行器（Homing Test Vehicle）
🗣️ 情景例句
But I have a doctor's appointment in the afternoon.
但我后天下午跟医生约好了。
I'd like to deposit some money.
我想存点钱。
After a time, we noticed a snake charmer with two large baskets at the other side of the square,
过了一会儿，我们注意到广场的那一边有一个带着两个大筐的耍蛇人，