upkeep n.维护,维持,维修费
【例】I can't afford the upkeep of a large house and garden.
implicitly adj.含蓄的,暗中的
【例】Implicitly, they said this is a normal recession.
on the mind 在心头
operant adj.动作的,生效的
operant conditioning 可控行为调节;操作性条件反射
解放路上海伤害
upkeep n.维护,维持,维修费
【例】I can't afford the upkeep of a large house and garden.
implicitly adj.含蓄的,暗中的
【例】Implicitly, they said this is a normal recession.
on the mind 在心头
operant adj.动作的,生效的
operant conditioning 可控行为调节;操作性条件反射
解放路上海伤害