R101. reserve-R102. retire

reserve，reservation，reservoir

构词：re（back = 回）＋serve（留）

留回 v. 预留，保留；n. 储备，矜持，保护区。

相关：servant，conserve，deserve，preserve；separate，section

搭配：（预留）reserve a table / room，be reserved for

（保留）reserve my judgement，All rights reserved.（版权所有） 

                with / without reserve，be kept / held in reserve

（储备）oil / gas reserve，reserve funds / strength / army / police

（保护区）wildlife reserve，reserve land

（保守）show / overcome reserve

近义：book；save，keep，hold，retain；preserve，store

retire

构词：re（回）＋tire（= ter，to 到...去）

回去v. 退休

相关：tired，retirement；enter，inter

搭配：someone retires，the jury retires；retire from teaching / racing

近义：withdraw，leave，exit，depart，remove