Tachometry
n. [测]转速测定(法),流速测定(法)
🗣️ 情景例句
I've been wanting to meet you for some time.
很久以来我一直想见你。
You scared me!
吓我一大跳！
Ready? Go! Mr. Hu shouted, and the boys started to run.
“预备--跑！”胡先生喊道，男孩子们开始跑。