Unknowns
n. 未知事件（unknown的复数）
🗣️ 情景例句
When you feel your life is threatened, just dial 999 to get help.
当你的生命受到威胁的时候，拨打 999 求救。
I hope you have a good time on your trip.
我希望你在你的旅行上过得愉快。
Eric had been the eldest son of the family, very much older than his two brothers.
埃里克是这家长子。