Fundamentally, the USPS is in a historic squeeze between technological change that has permanently decreased demand for its bread-and-butter product, first-class mail, and a regulatory structure that denies management the flexibility to adjust its operations to the new reality.

但从本质上看，美国邮政署正处于具有历史意义的技术革新与监管构的双重压迫之下：一方面，技术不断调整升级，致使其拳头产品特快邮件的需求持续走低；另外一方面，监管构拒绝灵的管理，无法与时俱进。

I see, but the sales decreased in May and September following the campaigns.

确实，但是束后的5月和9月的销售额却有所下降。

Thanks to vaccines, both the morbidity rate and the mortality rate have decreased.

在通过疫苗这种防护以后，发病率降低，死亡率就降低了。”

Hotel operators are also worried about decreases in business travel.

酒店经营者也担心商务旅行的减少。

A third type of negative symptom is avolition, which is this decrease in motivation to complete certain goals, so someone might stay at home for long periods of time, without trying to reach out to friends or find work.

第三种阴性症状叫机缺乏，表为完成特定目标的力下降；患者能会长时间呆在家里，不去找朋友，也不会去找工作。

The western Antarctica was losing the vast majority of ice, you know, decreasing in mass, and showing signs of strain, you know.

南极洲西部有大量冰川消失，就是很大范围的消失，形势十分紧张。

Regular exercise can significantly improve self-regulation and decrease disciplinary consequences for negative behavior.

定期以显著提高自我调节能力， 减少不良行为所导致的纪律后果。

Face-to-face contact is decreasing because of the Internet.

互联网的出让面对面的交流逐渐减少。

So, the number of people watching the newscast – the news broadcast – has decreased in the last several years.

所以，观看新闻播报的人数在近几年里减少了。

Their participants took around 5 minutes longer to fall asleep, had a 30% decrease in deep sleep, and slept around 20% less when there was a full moon.

在月圆时，实验参与者比平常多花了 5 分钟的时间入睡，且减少了 30% 的深度睡眠。同时睡眠长度亦少了 20%。

" When people are sleep-deprived, there are higher levels of stress hormones in their bodies, which can decrease immune function, " says Dr. Phyllis Zee of Northwestern University in Chicago.

" 人们缺乏睡眠时，体内的压力荷尔蒙水平较高，导致免疫功能降低，" 芝加哥西北大学菲利斯·徐说道。

When the constitution was signed, people had little regard for paper money because of its steadily decreasing value during the colonial era.

当宪法签署的时候，人们很少重视纸币，因为在殖民时期纸币的价值在不断下降。

One factor behind the unemployment rate decrease was because fewer Americans were looking for work.

失业率下降的一个原因是因为找工作的美国人减少了。

Like the bill that the House of Representatives passed in November, the Senate legislation would reduce taxes for most Americans and decrease the taxes that businesses pay on their profits.

就像11月份众议院通过的法案一样，这项众议院法案将会为大多数美国民众降低税款，并且还将降低企业税款。

One analyst says the fact that so many more jobs were counted indicates that a possible recession, a sustained decrease in the economy is not going to happen anytime soon.

一位分析师表示，如此多的就业岗位被计算在内，这一事实表明，经济能出的衰退，经济的持续下滑在短期内是不会发生的。

Johns Hopkins University says it's still recording hundreds of thousands of new positive tests per day but there has been a steady decrease in that number over the past week or so.

约翰·霍普金斯大学表示，每天仍有数十万新的阳性检测病例，但在过去一周左右的时间里，这个数字一直在稳步下降。

But though the country's poverty rate has decreased substantially, it's still around 22 percent meaning over a fifth of the nation's 31 million people live below the poverty line.

但是尽管这个国家的贫困率已经大幅下降，仍有22% 左右，这意味着全国3100万人口中有五分之一生在贫困线以下。

That happened quickly, but Afghanistan has remained unstable and thousands of American troops have been stationed there ever since, though their number has increased and decreased over the years, today there are about 14,000 American troops in Afghanistan.

这种情况发生得很快，但阿富汗局势一直不稳定，从那时起，数千名美军驻扎在那里，尽管这些年来他们的人数有增有减，但今天在阿富汗的美军大约有一万四千人。

As the heat rises during the day, the condition of produce deteriorates and food sold at farmer's markets can decrease in value to less than half of where it started if it gets sold at all.

随着日间气温上升，生产条件会恶化，在农贸市场出售的食物也会因此质量降至生产时的一半以下，这还是在这些食物卖得出去的情况下。

Analysts say her plans indicate that her political power has decreased.

据分析她的计划表明她的政治力量已经减弱。