挺身而出

Explanation: To come forward: the body stays straight. Body stand up straight. Describe the face of difficult or dangerous things, stand out. 　　Usage: Partial official; as the predicate attribute; with compliment 　　Source: "Old Five Dynasties Week Tangjing Si Chuan": "city of a few days after the _set_tlement, King think to come forward and make reports on the neighboring counties, have hundreds of reinforcements, by the grass canopy, complex has its city, people rely on is based on cents Economy. " 　　Examples: Some ~, being held in custody by the inside. (Tao, "overcharged for three to five bucket") 　　Riddle: Hide Thesaurus:  volunteer one's services as Mao sui once did, offer to undertake, Xitingzunbian, present oneself Antonym Group:  Had nothing to do, indecision, be an onlooker; sit by and watch; watch the fighting from behind the rampart, look on coldly as a bystander, Sit by and watch Not save, Hesitate when decision is needed, No activity Yuzhong, none enthusiasm, apathy, dither, Dread not before, flinch, lack of interest, enthusiasm or concern, sit by, leave sb. in the lurch, boggle