1. With smart power, diplomacy will be the vanguard of our foreign policy. 在灵活运用的力量中，外交将是我们外交政策的前卫。
2. The however 1 hour's playing time, was already enough regarding an outstanding vanguard. 不过1个小时的比赛时间，对于一名优秀的前锋已经足够。
3. All through the developing world the vanguard of the rural exodus has reached the urban fringes already. 在整个发展中的世界里，退出农村而向城市迁徙的先锋已经到达了城市的边缘。
英英解释
n.
1. the leading units moving at the head of an army
2. any creative group active in the innovation and application of new concepts and techniques in a give
3. the position of greatest importance or advancement; the leading position in any movement or field
