1·It is hard to design for beam expander with high power and wide aperture required, because it is shorten length, larger aperture, as well as on axis and off axis aberration must be corrected properly.
高倍率及大孔径扩束器要求筒长短、口径大、轴上和轴外的像差都要很好地校正，所以光学系统的设计是非常困难的。
2·Shorten your stride. I won't get into a discussion of turnover versus stride length here, but suffice it to say most runners have too long of stride.
缩短你的跨步。我这里不想对频率和跨步长度作讨论，只想说大多数长跑的人的跨步都太长了。
3·Some ants, when they arrived at the feeding station, had the ends of their legs amputated, to shorten their stride length.
有的蚂蚁抵达饲喂点后，就将其腿部末端切除，以缩短其步长。
4·Running causes the muscles to shorten and stretching helps them re-establish their resting length, so you don't feel stiff afterwards.
跑步过程会使肌肉的长度变短，这种拉伸练习可以帮助肌肉重新恢复至其安静状态时的长度，从而不会使你在练习过后感到肌肉僵硬。
5·Telomere length tends to shorten with age, and shorter telomeres tend to be linked with shorter life spans.
端粒的长度与寿命的长短有关，染色体端粒越短，它所在的生命跨度也就越短。
6·Anything you can use to make the recovery task easier serves to shorten the length of the outage.
一切可用于让恢复任务变得更简单的办法都有助于缩短停机时间。
7·The length of maturity of large consumer durables loans is usually within one year, with the longest up to three years (or shorten).
大额耐用消费品贷款的期限一般在一年以内，最长为三年(含三年)。
8·Genetic factors and environmental stressors can shorten the length of the telomere.
遗传因素和环境压力可以使得端粒的长度缩短。
9·Researchers intend to look at other associations that shorten telomere length. These include environmental factors, such as increased body mass index and smoking.
研究者想调查端粒缩短的其它相关因素，包括环境因素，如体重增加和吸烟。
10·Some ants, when they arrived at the feeding station, had the ends of their legs amputated, to shorten their stride length.
有的蚂蚁抵达饲喂点后，它们的腿部末端被切除，以缩短其步长。