Permselectivity
选择通透性
🗣️ 情景例句
Are you worried?
你担心吗
Today we celebrate our day of independence.It's a national holiday.
今天我们庆祝我们的独立. 今天是国定假期。
Long ago, people believed that the world was flat.
很久以前人们相信地球是平的。