Semimillenary
a. 持续500年的
🗣️ 情景例句
By plane?
坐飞机来？
You look very serious about something.
你似乎有很严重的事。
A short while ago, my sister helped me to carry one of my old bookcases up the stairs.
几分钟前，我妹妹帮我把一个旧书橱抬上了楼。