Rect
abbr. 矩形（rectangular）；收据（receipt）
🗣️ 情景例句
She's doing fine, thank you.
她很好，谢谢你。
She lost her dignity.
她失去了镇定。
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。