1 sentence

1. 由于花粉过敏，他一到春天就经常打喷嚏。

   yóu​yú huā​fěn guò​mǐn, tā yī dào chūn​tiān jiù jīng​cháng dǎ pēn​tì.

   Because of his pollen allergy, he often sneezes in the spring.

   Source: Dong Chinese Dictionary