at one's worst

基本解释

"The team is not going through a good moment, but it's certainly not one of the worst times I've ever had at Milan, " he continued.
现在球队状况并不理想，但是肯定不是我在米兰遇到过的最坏的时候。
www.milan-milan.com
In April the situation at the Aral Sea was described as 'one of the planet's worst environmental disasters' by UN Secretary General Ban Ki-Moon.
在今年四月份，咸海的处境被联合国秘书长潘基文（Ban Ki-Moon）描述为“地球上最恶劣的环境灾难之一”。
That's less than one 20th of the area that was affected by the blazes when they were at their worst.
这个受灾面积是俄罗斯受火灾影响最严重时候火警面积的二十分之一。

Vladimir Gusinsky, a media tycoon on bail in Spain and under heavy fire from the Kremlin, has given money to improve conditions at one of Moscow's worst prisons, where he spent a few uncomfortable nights last summer.
ECONOMIST: Russia
You wouldn't think Britain was one of the Western world's worst economic laggards by looking at the latest sales figures from Tesco , the supermarket giant that gets about half its revenues from the United Kingdom.
FORBES: Magazine Article
It is an attempt to tackle one of Pakistan's worst problems: the huge number of children who receive no education at all.
ECONOMIST: A small start on the big problem of illiteracy