The Lincoln Memorial pool is green. Small plants called algae are growing in the water. Workers are using chemicals to clean it.

林肯紀念館的水池變綠了。水中生長著一種稱為藻類的小植物。工人正使用化學藥劑進行清理。

The government spent a lot of money to fix the pool. They wanted the water to look like a blue flag. They worked very fast. Now, the warm summer water helps the green algae grow.

政府花了很多錢來修復水池。他們希望水色看起來像藍色的旗幟。他們工作速度很快。現在，夏季溫暖的水分助長了綠藻的生長。

Workers put hydrogen peroxide and ozone in the water. These chemicals kill the algae. One scientist says this is only a short fix. The water does not move fast. Slow water helps algae grow.

工人向水中加入過氧化氫和臭氧。這些化學藥劑可以殺死藻類。一名科學家表示，這僅僅是短期方案。水流速較慢，而緩慢的水流有助於藻類生長。

This pool is very famous. Many people visited it for important protests in the past. But the pool always has this problem. Birds and rain bring more algae into the water.

這個水池非常有名。過去許多人在這裡參與重要的抗議活動。但這個水池一直存在這個問題。鳥類和雨水將更多藻類帶入水中。

Workers are still cleaning the pool. They want the water to look clear and still.

工人仍在清理水池。他們希望水質看起來清澈且平靜。