Underdeterminant
子行列式
🗣️ 情景例句
What time do you usually have supper?
你通常几点吃晚餐？
I'm sick and tired of my monotonous life.
我对自己的单调生活感到厌倦。
so they insured it for the trip.
于是，他们对这只盘子的运输安全投了保。