adj.隐藏的；秘密的
动词hide的过去分词.
He whistled to his friend to keep hidden. 他吹口哨通知朋友继续隐蔽。
You must be alert to the hidden danger. 你必须对隐藏的危险保持警觉。
The soldiers were warned to remain hidden and not to expose themselves. 士兵们受到警告要隐藏好，不能暴露自己招致危险。
Our planet is filled with hidden places. 我们的星球到处都有不为人知的地方。
vt.责备
