reserves
A nature reserve is an area of land where the animals, birds, and plants are officially protected.
If someone shows reserve, they keep their feelings hidden.
I hope that you'll overcome your reserve and let me know.
我希望你能克服矜持,让我知道。
in reserve
If you have something in reserve, you have it available for use when it is needed.
He poked around the top of his cabinet for the bottle of whisky that he kept in reserve.
他在壁橱的上面翻找他留的那瓶威士忌。
reserves , reserving , reserved
If something is reserved for a particular person or purpose, it is kept specially for that person or purpose.
set aside
A double room with a balcony overlooking the sea had been reserved for him.
一个带阳台的海景双人间已预留给他了。
If you reserve something such as a table, ticket, or magazine, you arrange for it to be kept specially for you, rather than sold or given to someone else.
I'll reserve a table for five.
我要预订一张5人的餐桌。