英语语法分析

Each has an opening to the colonic lumen through a narrow neck.

每个憩室有一个窄的开口通向结肠腔。

The light perceived by the human eye is measured in units called lumen-hours.

人类眼睛所观测到的光是以流明小时这种单位度量的。

In 1700 a typical Briton consumed 580 lumen-hours in the course of a year, from candles, wood and oil.

在1700年一个普通的英国人一年消耗580流明时燃烧蜡烛、木材和油产生的光。