demonstration ·noun (PROOF)
Definition: proof that something exists or is true Level: C1
这场灾难清楚地证明需要加强管控。
This disaster is a clear ___demonstration of the need for tighter controls.
她的快速康复有力地证明了该治疗方法的有效性。
Her quick recovery is a powerful ___demonstration of the treatment's effectiveness.
稳定的经济增长是新政策取得成功的有力证明。
The steady economic growth is a solid ___demonstration of the new policy's success.