根除

root out; uproot; stamp out; eradicate; exterminate; extirpate; thoroughly do away with; eradication; elimination; extirpation

习惯

habit; custom; rule; practice; ritual; usage; knack; way; convention; wont; adjust; accustom; habituate; acclimatize; settle in; be used to; get used to; become accustomed to; be accustomed to; accustomed; attuned; habitual; conventional; customary