/rɪˈzɜ:v ||; rɪˈzɝv/noun1 [C] [usu.pl] something that you keep for a special reason or to use at a later date 储存备用之物；储备: The US has huge oil reserves. 美国有庞大的石油储备。
2 [C] an area of land where the plants, animals, etc are protected by law 保护区（区内的动植物等均受法律保护）: a nature reserve 自然保护区He works as a warden on a game reserve in Kenya. 他在肯尼亚野生动物保护区当管理员。
3 [U] the quality of being shy or keeping your feelings hidden 含蓄；克制；矜持；拘谨: It took a long time to break down her reserve and get her to relax. 花了很长时间才使她不再拘谨，放松下来。
4 [C] (in sport) a person who will play in a game if one of the usual members of the team cannot play （体育）替补、后补或预备队员，后备
in reserve that you keep and do not use unless you need to 储备；备用:
Keep some money in reserve for emergencies. 要留下一点钱以应不时之需。