Luffing
俯仰运动, 上下摆动, 起重机臂的转动
🗣️ 情景例句
I'd like you to meet the head of the student relations committee.
我想见见学生关系委员会主席。
In college I majored in science.What was your major?
在学院我主修了自然科学，你主修了什么？
May I go with you?
我可以跟你一起去吗？