硬腭

腭裂。一种天生的缺陷，嘴巴的上部和下部不能完全闭合。

发音时，舌面前部向上向前，接近硬腭前部，中间留有窄缝，气流从窄缝中挤出而发声。

swallow hard

hard cash

between the devil and the deep bluesea; between the rock and the hard place

hard to bear

die-hard

go hard with sb.

hard water

hard surfacing