不绝如缕

Explanation: Must: break; thread: thread. Described the situation more critical or sound, breath and other low weak and intermittent. 　　Usage: Partial official; as the predicate attribute; for sound, letters, emotional 　　Source: Song Su "Literary Works": "The remaining sound wave, hanging by a thread." 　　Examples: Concert, performers singing ~. 　　Riddle: Silkworm silk square to do to death Thesaurus:  Pressing, If lines are not absolutely, If fat is not absolutely, Life as hanging wire, Leiluanzhiwei, emergency, Crisis such as the morning dew, with the sword of Damocles above one's head