Quaternity
n. 四個一組, 四人一組, 四位一體
??? 情景例句
Well, maybe you'll come for lunch some Sunday,so we can really thank you for bringing Richard's bag back.
既然如此 或許哪個星期天你能來吃中飯讓我們好好地感謝你送回Richard的旅行袋。
Better safe than sorry.
小心不出大錯。
He repaired his house.
他修理了他的房子。