Liǎng / wèi / lǎo / péngyou / xiāngshì / yí / xiào / xǔduō / huà / dōu / miào / zài / bù / yán / zhōng

两位老朋友相视一笑，许多话都妙在不言中。

The two old friends exchanged a smile, leaving much meaning unspoken.