Matroid
矩阵胚, 拟阵
🗣️ 情景例句
wants to appoint you to a special arts committee.
将任命你到一个特别艺术委员会。
Fire, water, and money are good servants, but bad masters.
水火金钱是忠仆，使用不当是祸首。
I like writing to my penfriend, but it takes a lot of time.
我喜欢给笔友写信，但那很花时间。