Decad
n. 十, 由十个构成的一组
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
A man may love his house well without riding on the ridge.
有宝何必人前夸。
As long as all was still, the pen drew a straight line,
只要一切都是静止的，笔就会划出一条直线；