1. The fireman demonstrated great courage in saving the child.
   那救火员在救那小孩时表现了十足的勇气。
2. To demonstrate or declare to be justified.
   证明或宣布…为合法
3. Large crowds demonstrated outside the British Embassy.
   许多群众在英国大使馆外示威。
4. This fully demonstrates their willingness to cooperate.
   这充分表明他们愿意合作。
5. Recent events demonstrate the need for a change in policy.
   近采的事件表明了政策改革的必要。

　1个形容词解释