她在地图上做了一个标记来指示野餐地点。

She made a ___mark on the map to show the picnic spot.

古墙上那些神秘的标记从未被破译。

Those mysterious ___marks on the ancient wall have never been deciphered.

徒步者应沿着小路上绘制的标记前进。

Hikers should follow the painted ___marks along the trail.