The Lincoln Memorial Reflecting Pool recently underwent a multimillion-dollar renovation to address structural failures and alter its aesthetic appearance, though the project has since encountered biological complications.

林肯紀念館反思池最近進行了一次耗資數百萬美元的翻新，以解決結構失效並改變其美觀外觀，儘管該項目隨後遇到了生物學上的併發問題。

The renovation was initiated under the direction of President Donald Trump as part of a broader urban revitalization of the National Mall preceding the United States' 250th anniversary. The primary technical objectives involved the remediation of long-standing leaks and the application of a dark blue coating, designated as 'American flag blue,' to the basin. However, shortly after the pool was refilled, the water transitioned to a green hue. This phenomenon is attributed to the proliferation of chlorophyll-producing algae, a process accelerated by recent high temperatures and the shallow, sun-exposed nature of the basin. An expert from Swansea University noted that while darker surfaces may increase water temperatures and facilitate growth, nutrient availability remains a primary driver of such blooms.

此次翻新是在唐納德·川普總統的指示下開始的，作為美國建國 250 週年之前國家商城更廣泛城市振興計劃的一部分。主要技術目標涉及修復長期存在的滲漏問題，並在池底塗上一層被指定為「美國國旗藍」的深藍色塗層。然而，在水池重新注水後不久，水色轉為綠色。此現象歸因於產生葉綠素的藻類增殖，而近期的極高氣溫以及池底較淺且暴露於陽光的特性加速了這一過程。史旺西大學的一位專家指出，雖然較深色的表面可能會提高水溫並促進生長，但營養物質的可用性仍是此類藻類爆發的主要驅動因素。

Institutional and fiscal controversies have emerged regarding the procurement process. The project, which ultimately cost approximately $14.2 million, was awarded via a no-bid contract to Atlantic Industrial Coatings, a firm with prior ties to the president's private enterprises. This procurement method prompted a legal challenge from The Cultural Landscape Foundation, which contended that the alterations bypassed mandatory historic reviews. Furthermore, the discrepancy between the initial estimated cost of $1.5 to $2 million and the final expenditure has drawn criticism regarding the allocation of taxpayer funds.

關於採購過程，已出現制度與財政上的爭議。該項目最終耗資約 1,420 萬美元，是以無需競標的合同授予 Atlantic Industrial Coatings，而該公司此前與總統的私人企業有聯繫。這種採購方式引起了文化景觀基金會的法律挑戰，該基金會主張這些改動規避了強制性的歷史審查。此外，最初預估成本 150 萬至 200 萬美元與最終支出之間的差距，也引起了關於納稅人資金分配的批評。

In response to the algal bloom, the Department of the Interior has deployed 'nanobubbler' ozone technology and hydrogen peroxide treatments to neutralize the organisms. Administration officials have characterized these measures as superior to those employed by previous administrations, asserting that the current technology effectively eradicates the algae. Conversely, some observers and environmental specialists suggest that the pool's inherent design and environmental exposure render the total elimination of algae an improbable objective.

為了應對藻類爆發，內政部部署了「納米氣泡」臭氧技術和過氧化氫處理以中和這些生物。政府官員將這些措施描述為優於前任政府所採用的方案，並聲稱目前的技術能有效根除藻類。相反，一些觀察家和環境專家認為，水池固有的設計和環境暴露程度，使得完全消除藻類成為一個不太可能的目標。

The Reflecting Pool remains under active maintenance as authorities attempt to restore the intended blue coloration through chemical and mechanical filtration.

反思池目前仍處於積極維護狀態，當局正嘗試透過化學和機械過濾來恢復預期的藍色。