:in a state of being ready or prepared to happen or be done即将发生；就要出现
We have a big surprise in store [=ready, prepared] for you.我们给你准备了一个大大的惊喜。
— used to talk about what will happen to someone in the future（某人）将有（…未来）；（某人）将遭遇
I wonder what the future holds in store for us. = I wonder what lies in store for us in the future. [=I wonder what will happen to us in the future]我想知道我们将来的命运如何。