游泳池使用氯胺作为消毒剂，因为它比氯更稳定。

The swimming pool uses ___chloramine as a disinfectant because it's more stable than chlorine.

游泳池使用氯胺作为消毒剂来保持水质清洁。

Swimming pools use ___chloramine as a disinfectant to keep the water clean.