Semidefinite matrix
[计] 半定矩阵
🧩 词语组成解析
[计] 半定的
🗣️ 情景例句
He'd been two-timing me for months.
他另有所爱，多少个月来一直在瞒着我。
I fear the Greeks, even when bringing gifts.
敌人献礼品，千万莫轻信。
Yes, they're free. But there's usually a long line.
是的，免费。但常常要排长队。