遇氯气、光、水分时，品质会慢慢下降。的翻译：When chlorine gas, light, moisture, quality will gradually decline. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Case of chlorine, light, water, the quality will slowly drop.

When chlorine gas, light, moisture, quality will gradually decline.

When meets the chlorine, the light, the moisture content, the quality can drop slowly.

When chlorine gas, light, moisture, quality will decline slowly.

When chlorine gas, light, moisture, quality will gradually decline.