想指揮樂(lè)隊(duì)的人必須背對(duì)人群。
To signal an emergency, use the rule of three; 3 shouts, 3 horn blasts, or 3 whistles.
革命者可以失去一切:家庭、自由,甚至生命。但不能失去道德。
Dreams need courage, and even more action.