珍惜:cherish/treasure

　　把握:seize

　　回憶:recall/recollect/reminisce

　　懷舊:nostalgia

　　紀念:in memory of/commemorate

　　虛度:waste/loiter/squander/idle away

　　流逝:time flies/ wear away

　　延遲:delay/procrastinate

　　轉瞬即逝:in a blink of an eye

　　千載難逢:once in a blue moon