咸淡

zhè tāng de xián dàn zhèng hé shì

这汤的咸淡正合适。

This soup tastes just right, neither too salty nor too flat.

xián dàn shì zhōng

咸淡适中

moderately salted

xián dàn zěn yàng

咸淡怎样？

How salty is it?