When placed on the ground, baits should be situated on small paper cards or other flat, light-colored surfaces, or in test-tubes or vials.

诱饵放在地上时，应放在小纸卡上或其它平坦的浅色表面上，或放在试管或小瓶子里。

youdao

I am looking for a flat on the ground floor.

我想在一楼找一套公寓。

youdao

In a panic, he scrambled to the ditch and lay flat on the ground.

慌乱中，他爬到沟里，平躺在地上。

youdao

About 17 firefighters tackled the blaze in the ground-floor flat of a two-storey building.

BBC: Avontoun Crescent house

We didn't clock our speeds, but the bike can supposedly top about 15 miles per hour on flat ground with the pedal-assist on, and that sounds about right to us.

ENGADGET: Schwinn Tailwind electric bike review

In the tiny bedroom they share in a ground floor flat, 13-year-old Lauren Fick is trying to finish her homework on her bed, as her two older brothers rub shoulders at the computer.

BBC: Can the gangs of Cape Town be talked out of violence?