Semidefinite matrix
[计] 半定矩阵
🧩 词语组成解析
[计] 半定的
🗣️ 情景例句
May I have headphones for the in-flight movie?
我可以要一副耳机来欣赏飞机上的电影吗？
I like dressing up in old-fashioned clothes.
我喜欢穿着老式的服装。
It's rude to stare at other people.
盯着别人看是不礼貌的。