Tachygraphometer
供测量用的带照准仪的速测仪
🗣️ 情景例句
you had some doubts about wanting to go to Michigan.
你对上Michigan大学有些疑虑。
How long did it last?
持续了多久？
I was very glad when the boys won the relay race.
我非常高兴，男同学在接力赛中获胜。