n.预定；保留意见
I'd like to make a reservation. 我想订票。
I'll arrive late, but please keep my reservation. 我会晚一点到达，请保留所预订的房间。
Do you require a deposit to confirm a reservation? 确定预定的旅馆房间要不要付定金？
They accepted the proposal without reservation. 他们无保留地接受了这个建议。
n.保存；维护；防腐
n.预定；保留意见
n.(对野生动物、自然区、古迹和传统事物等的)保护主义者
