Underdeterminant
子行列式
🗣️ 情景例句
She said she'll call you later.
她说她等会儿给你电话。
If there's anything else I can do, please call on me.
如果有任何事情我能效劳的话，请打电话给我。
OK, listen carefully, please.
好，请仔细听着。