Palaeoptera
古翅类
🗣️ 情景例句
Do you do hair coloring?
你做染发吗？
When the storm broke, I was doing the ironing.
当火起来的时候，我在烫衣服。
it would be up and down, to and for and from side to side.
呈现出上上下下、来来回回、左左右右3种性质的运动。