Quaternion
n. 四个一组, 四个一套, 四元数
🗣️ 情景例句
Keith and I are through.
基思和我已经不再来往了。
My sister has been engaged for two months.
我的姐姐订婚有2个月的时间了
My dentist had just pulled out one of my teeth and had told me to rest for a while.
我的牙科医生刚刚给我拔掉了一颗牙，叫我休息一会儿。