Matroid
矩阵胚, 拟阵
🗣️ 情景例句
We're just having some cola
我们只是先喝点可乐
When a dog is drowning,every one offers him drink.
待到狗溺水，众人给水喝。
Without it we could not make a living.
要是没有这条河，我们就无法生存下去。