他一边检查手掌上那道浅浅的伤口，一边做了个鬼脸。

He grimaced as he examined the shallow cut across the ___palm of his hand.

在那次关键的握手之前，她在牛仔裤上擦了擦汗湿的手掌。

She wiped her sweaty ___palm on her jeans before the crucial handshake.

算命师用指尖仔细地描摹着我手掌上的纹路。

The fortune teller carefully traced the lines on my ___palm with her fingertip.