Every March since, the ice has returned to an annual maximum, but never again has it been as large as the one observed that first year.

之后每逢三月，冰层便会恢复至年度最高值，但从未达到1979年所观察的规模那样巨大。

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The first map, shown below, shows the average thickness of the sea-ice in January and February this year, as the ice approached its annual maximum.

下方的第一幅地图显示了今年一、二月海冰的平均厚度，当时正值冰盖到达每年最厚的时候。

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The yearly depletion of stratospheric ozone over Antarctica – more commonly referred to as the “ozone hole” – started in early August 2010 and is now expanding toward its annual maximum.

自八月初至今，通过观测到的数据显示，南极的臭氧空洞面积正在不断扩大，正在接近其年度最大值。

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Every year the winter maximum gets higher, as does the summer minimum but the difference between annual maximum and minimum increases.

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As a result, the Lakers can resign Howard for 5-years with a maximum annual increase in pay of 7.5%, while another team would be limited to offering a 4-year deal with maximum annual raises of only 4.5%.

FORBES: Connect

The chronically ill should also be protected by a maximum annual fee payable by each person.

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