Definition (缺乏)
To find oneself without something, especially when it is needed; to be in a state of lacking.
缺乏（某物），缺少（某物）
He always makes sure he has enough cash before leaving the house, he hates to be caught without any.
他出门前总是确保带够现金，他讨厌发现自己身上没钱。
It is best to check your tires before going on a long journey, you don't want to be caught without a spare.
在长途旅行前最好检查一下你的轮胎，你肯定不想发现自己没有备用轮胎。
She always keeps a first-aid kit in her car, just in case she is caught without one.
她总是在车里放一个急救箱，以防万一发现自己没有。