Flashboarding
n. 【土木工程】水闸板，临时挡水闸门，堰板
🗣️ 情景例句
When was it built?
它是什么时候建造的？
He lived in California until he was seventeen.
他生活在加利福尼亚直到他十七岁。
Have you got a penfriend?
你有笔友吗？