tā / yīn wèi / shuǐ tǔ bù fú / yí / dào / wài dì / jiù / nào / dù zi / cuān xī

他因为水土不服，一到外地就闹肚子蹿稀。

Because he wasn't acclimatized, he got diarrhea as soon as he went out of town.