不绝如发

Explanation: Must: off. Described the critical situation 　　Usage: Supplemental; for the predicate; containing derogatory 　　Source: Han Ban Gu "Han Yan Liu Dan Wang Chuan thorn": "first day Zhulv plot took an unusual move, without a break, such as Liu made." 　　Examples: Hun disorder more than ten years, ~, Lai Mongolian force, it was re-safety. ★ "pass down the Hun" Thesaurus:  almost extinct, Pressing, If lines are not absolutely, Life as hanging wire, Leiluanzhiwei, emergency, Crisis such as the morning dew, with the sword of Damocles above one's head