" Some one with both feet on the ground is a person with a good understanding of reality.

VOA: special.2009.03.08

we "put both feet squarely on the ground" of the Eiffel Tower, we're liberated from the idea that somehow or another it's a governing presence.

如果，我们将，“双脚平放于地面“，站在埃菲尔铁塔上，我们就摆脱了,它是一种支配性的存在的观点。

耶鲁公开课 - 文学理论导论课程节选

Someone with both feet on the ground may not be as open and easy to deal with as someone who is down to earth.

VOA: special.2009.03.08

The person who is down to earth usually has both feet on the ground.

VOA: special.2009.03.08

The expression is "both feet on the ground.

VOA: special.2009.03.08

When we have both our feet firmly on the ground, and when we are down to earth we do not have our noses in the air.

VOA: special.2009.03.08