Sustainable forestry is not just about cutting trees; it's about ensuring the future has forests to cherish.
解读:不劳而获、投机取巧所得快乐转瞬即逝,唯有持续付出汗水与心血,攻克难题、实现目标,由此产生的快乐才扎实、长久,激励踏实奋斗。