史上最严重的大规模珊瑚白化事件之一发生于1998年——该年也是有史以来最热的一年，与2010年一样，也是厄尔尼诺现象的一年。
One of the worst mass bleaching events in history occurred in 1998 — which was also one of the hottest years on record, and like 2010, an El Nio year.
当卫生被作为一种商品并用利润推动医疗时，卫生保健的可及性和健康结果方面的不公平现象往往最严重。
Inequities in access to health care and in health outcomes are usually the greatest in cases where health is treated as a commodity and care is driven by profits.
奎因于1940年逝世，享年52岁，曾在美国歧视黑人现象最严重的时期勇敢地捍卫种族平等，甚至在天主教会内为黑人信徒争取利益。
Monsignor Quinn, who died in 1940 at age 52, championed racial equality at a time when discrimination against blacks was ubiquitous in America, even inside the Catholic Church.
科学家们已经观察到一些物种出现了一种令人不安的基因变异现象，这些都是当时那场世界上最严重的核事故，给这里长期留下的至今仍能让人见得到的恶果。
Scientists have observed that other species show signs of troubling genetic changes, evidence of the continuing long-term aftermath of what is still seen as the world's worst nuclear disaster.
加州监狱的超员现象现在在美国各州中是最严重，诉讼发生率非常高，其次就是乔治亚州和阿拉巴马州。
The overcrowding in California's prisons, by far the worst in the country with only Georgia and Alabama coming close, has been the subject of lawsuits for years.
“已经产生了一些影响，”查布接着写道，“今年大堡礁出现了有记录以来最严重的珊瑚白化现象。”
"There are effects already," Mr. Chubb continued. "This year saw the most significant coral bleaching event ever recorded for the reef."
当时最严重的情况是在通货膨胀物价剧增时导致经济萧条或可怕的滞涨现象。
Worst cases can lead to recession or the dreaded "stagflation", when inflation soars and growth sputters.
然而，在中国主要城市中北京虽然留有一定的改善空间，但依然面临着最严重的交通堵塞现象。
However, Beijing still encounters the most serious traffic congestion among major Chinese cities, leaving much room for improvement.
然而，在中国主要城市中北京虽然留有一定的改善空间，但依然面临着最严重的交通堵塞现象。
However, Beijing still encounters the most serious traffic congestion among major Chinese cities, leaving much room for improvement.
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