吐故納新
get rid of the stale and take in the fresh;exhale the old and inhale the new
一個(gè)政黨要～，才能保持活力。A political party can sustain its vitality only by getting rid of the stale elements and taking in the fresh.
吐故納新tǔ ɡù nà xīn
原指人體呼吸，吐出二氧化碳，吸進(jìn)新鮮空氣?，F(xiàn)多用以比喻揚(yáng)棄那些不好的東西，吸收新的、好的東西。get rid of the state and take in the fresh, exhale the old and take in the new