Phugoid motion
[化] 起伏运动
🧩 词语组成解析
长週期振动
motion
['məuʃən]
n. 运动;手势;动机，意向;请求;
vt. 打手势;向某人点头或摇头示意;打手势要求[指示];
vi. 运动;打手势;
🗣️ 情景例句
I would like a haircut, please.
麻烦你，我想理发。
During the two years since I took charge of the department.
在我负责这个部门的两年中。
Her husband had built up a large business during his lifetime, and when he died ten years ago in 1989 he left all his money to his wife.
她的丈夫一生中逐步建立起一家大商行，而当他10年前即于1985年去世后，他把全部财产留给了他的妻子。"