“深的”用英语怎么说？

他们对经济激励的重要性有了更深的理解。They have a stronger appreciation of the importance of economic incentives.凸凹不平的石墙就像一条很深的运河的河岸。The rough rock walls were like the sides of a deep canal.在他头顶的天花板上有一道很深的裂缝。There was a deep crack in the c...