旅行时，妈妈把一件轻便的皮袄放进了行李箱，晚上降温时正好派上用场。
For the trip, Mom packed a lightweight fur-lined jacket in her suitcase, and it came in handy when the temperature dropped that evening.
For the trip, Mom packed a lightweight fur-lined jacket in her suitcase, and it came in handy when the temperature dropped that evening.