step forward to offer to provide or do something, or to help with something 站出来;自告奋勇;挺身而出 When you hear your name called, please step forward. 当你的名字被念到时，请走上前来。 When the little girl went missing, many people stepped forward to search for her. 那名小女孩失踪后，许多人都自告奋勇去搜寻她。