Unifrequent
单频的
🗣️ 情景例句
OK. I understand. Thank you.
好吧，我懂了，谢谢你。
Men too seldom see their own faults.
人们很少能看到自己的过错。
The towers are built on immense underwater platforms make of steel and concrete.
塔身建在巨大的水下钢盘混凝土平台上。