Intrados
n. 拱腹(线), 拱之下面, 内弧面
🗣️ 情景例句
Have some iced tea.
喝点冰茶吧。
He that will have a hare to breakfast must hunt overnight.
早餐想吃野兔肉，头晚就须去捕捉。
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。