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346. fall to the ground(计划希望等)失败，落空 347. on ones guard(against)谨防，警惕;(be)on guard站岗 348. guard against(=defend，keep safe)警惕，防止guard against警卫 防止 349. guess at猜，估计 350. by guess靠猜 351. be guilty of犯有 罪或过失 352. be in the habit of习惯于 353. break off(a habit)改掉(某种习惯) 354. break sb. of(a habit)使某人改掉(某习惯) 355. get(fall)into the habit of养成了 的习惯 356. come to a halt(=stop)停止;停住 357. at hand在手边，眼前(附近) 358. by hand用手工(做) 359. hand in glove(with)狼狈为，密切合作 360. in hand 1)在手边2)(=under control)控制住 | 
