Phugoid
长週期振动
🗣️ 情景例句
Come by one day and look at some of the other dogs.
有空来一趟，看看其他狗。
Nothing is difficult to the man who will try.
世上无难事，只要人肯试。
Never mind, I'm feeling better now.
不要紧，我现在感觉好多啦。