The discovery shows that development of motility began more than two billion years ago.

一发现表明，运动能力的发展始于20多亿年前。

I can't believe my sperm have low motility.

我不敢相信我的精子的活动力太低。

Apparently, my sperm have low motility..

很显然地，我的精子活动力太低了。

Your count is excellent, but your motility is well below normal.

你的精子数量是非常好的 但是游动性处于平均水平以下。

Tobacco subsidies, sure. Research grants to study the motility of unpreserved bull sperm, of course. Creative-writing subsidies, never.

烟草补助，没问题。研究未经处理的牛精子活力需要项目资金，当然可以。作创作补助？休想。

Toxic metabolites also affect the autonomic nervous system regulating gastrointestinal motility, and this can causes abdominal pain, constipation, and vomiting.

毒性代谢产物也可以影响调节胃肠蠕动的自主神经系统，可以导致腹痛、便秘和呕吐。

Scientists believe this early time in motility may have faced a setback soon after the Paleoproterozoic Era, about the time of the Gabon fossils.

科认为，种早期的活动性可能在古元古代（大约是加蓬化石年代）后不久就开始发生倒退。

Thus, the parasympathetic causes slower heart rates and respiratory rates, sleep, increased gastrointestinal track motility, increased peripheral vascular flow, blood flow to all cells, liver and kidneys, and venous return to the heart.

因此，副交感神经引起心率和呼吸频率减慢、睡眠、胃肠运动和周围血流增加、血液流向所有细胞、肝脏和肾脏以及静脉血回流到心脏。