一面之交

wǒ hé tā yǒu yī miàn zhī jiāo

我和他有一面之交。

I was once acquainted with him.

guān yuán chēng zhòng dú chéng dù bù dà dàn yǔ tā yǒu yī miàn zhī jiāo de yī yì dà lì rén xiàn zhèng zài yī yuàn jiē shòu zhì liáo

官员称中毒程度不大，但与他有一面之交的一意大利人现正在医院接受治疗。

Officials say the level is not dangerous but an Italian who met with him is now in the hospital for treatment.