Chugging
n. (=chuffing)引擎中燃料的间歇性燃烧
🗣️ 情景例句
He worked his way through college.
他半工半读念完大学。
I'll work for 5 years and then go back to school.
我会工作五年，然后会学校。
Are these English books?
这些是英语书吗？