Machmeter
n. 马赫计
🗣️ 情景例句
He married a classmate from high school.
他与高中时代的同班同学结婚。
I'm afraid you will catch the Influenza.
我怕你会感染到流行性感冒。
You've got lots of old buildings in your country.
你们国家有许多古老的建筑物。