wǒ / dì yī cì / jiàn dào / dūn kēng / shí / yǒu diǎn / bù zhī dào / gāi / zěn me / yòng

我第一次见到蹲坑时，有点不知道该怎么用。

The first time I saw a squat toilet, I was a bit unsure how to use it.