reserve(a)
n. formality and propriety of manner 同义词：modesty
something kept back or saved for future use or a special purpose 同义词：backlogstockpile
an athlete who plays only when a starter on the team is replaced 同义词：substitutesecond-stringer
(medicine) potential capacity to respond in order to maintain vital functions a district that is reserved for particular purpose 同义词：reservation
armed forces that are not on active duty but can be called in an emergency 同义词：military reserve
the trait of being uncommunicative; not volunteering anything more than necessary 同义词：reticencetaciturnity
v. hold back or set aside, especially for future use or contingency give or assign a resource to a particular person or cause 同义词：allowappropriateearmarkset aside
obtain or arrange (for oneself) in advance"We managed to reserve a table at Maxim's"
arrange for and reserve (something for someone else) in advance"reserve me a seat on a flight"
同义词：holdbook