Tetragon
n. 四角形
✅ 同义词
🏥 医学释义
四边形
🗣️ 情景例句
He turned over his company to his son last year.
去年他把公司交给儿子管理。
What is learnt in the cradle lasts (or is carried) to the grave.
小时学会的事情到老不会忘记。
may have left an automatic messenger behind to await the possible awakening of an advanced civilization.
很可能会在离开太阳系时留下自动化信息装置，等待先进文明的觉醒。