1.I tapped the melon lightly, the way my mother does in the supermarket, listening for the hollow sound of the freshness: Pung, pung.

1.像母亲市场挑瓜那样，瓜上轻轻敲了敲，听有没有空洞洞的瓜熟的声音。果然传来“砰砰”的回声。