David Haskell created artificial nests with clay eggs and placed them on the ground beside a tape recorder that played the begging calls of either tree-nesting or of ground-nesting warblers.

David Haskell 制作了一些盛有泥蛋的人造鸟巢并把它们放在地面上，旁边有一个录音机，播放着树莺或地面莺的的乞食叫声。

youdao

When there is the occasional rain, the clay ground becomes extremely slippery.

偶尔下雨时，粘土地面就会变得非常滑。

youdao

The ground of this desert is made of clay.

这片沙漠的土壤是用粘土做的。

youdao

The clay will be found about one meter below the ground.

VOA: special.2009.09.14

He dropped to the ground and kissed the clay.

NPR: Djokovic Beats Nadal To Win Monte Carlo Masters

Armed with more sophisticated analysis tools than earlier rover teams, Curiosity scientists have been able to conclusively find the first on-the-ground evidence for the presence of abundant clay minerals within those drilled rocks.

CNN: Have a drink on Mars

On the ground floor, in a large workroom, there is the sound of clay slabs being pounded.

WSJ: Lily Pads and Bamboo Stalks, Made of Clay