Retroreflection
n. [物]回射
🗣️ 情景例句
You guys are like three kids.
你们就像三个孩子。
I haven't seen you for a long time.
好久没有见到你了。
In the beginning they used to carve Chinese characters on stones to record important dates in history.
开始时，他们常把汉字刻在石头上，记载历史上重要的日期。