Isopycn
等体积线, 等容线
🗣️ 情景例句
Ah! Miss Stewart! Welcome!
嗨！ Stewart小姐！ 欢迎你！
I often have supper at night.
我常常在晚上吃晚餐。
Oh, we can call it Mid-Autumn Day. We eat mooncakes on that day.
噢，我们管它叫中秋节。过节那天我们吃月饼。