The cell was a small room with a single lightbulb hanging very far away from the cement-decked ceiling; the floor was dark and grimy from urine, tears, sweat, and feces.

监牢很小，只有一个灯泡挂在高高的水泥天花板上，地板因为尿渍、眼泪、汗水和粪便而变得又黑又肮脏。

youdao

Cement screed is used for the floor (for sound insulation and thermal mass) while the ceiling consists of perforated cement-based panels to absorb sound.

水泥砂浆层用于地板(达到隔音隔热的目的)，而天花板由多孔的水泥基板吸收声音。

youdao

Before painting, interior cement wall and ceiling surfaces must be firm, flat, dry, clean and no dust, should be noted.

涂装前，室内水泥墙面及天花板表面必须稳固、平整、干燥、清洁和无浮尘，应注意。

youdao

Last spring, I posted a column on this blog arguing that, in the pharmaceutical business, the glass ceiling looks a bit like cement.

FORBES: Guest Post: Searching For Big Pharma's First Woman CEO