这就是为什么近年来立法改革的多次尝试都以失败告终，这使得邮政服务无法支付账单，除非推迟重要的现代化进程。
This is why repeated attempts at reform legislation have failed in recent years, leaving the Postal Service unable to pay its bills except by deferring vital modernization.
因为就在不久前，中国和俄罗斯还想推迟整个进程。
Not long ago China and Russia wanted to put off the whole process.
相反，如果端粒酶一直保持较高的活力，则端粒的长度就能保持下去，而细胞衰老的进程就会被推迟，这种情形可见于癌细胞：一类属于永生的细胞。
Conversely, if telomerase activity is high, telomere length is maintained, and cellular senescence is delayed. This is the case in cancer cells, which can be considered to have eternal life.
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