That is why the smallest of the herbivores, Thomson's gazelle, lives on fruit that is very nutritious but too thin on the ground to support a larger animal.

那就解释了为什么最小型的食草动物，汤普森瞪羚，能以水果为食；虽然水果非常有营养，但是在地面上太稀少，不足以维持体型更大的动物生存。

youdao

Customers are thin on the ground at this time of year.

一年里这个季节顾客很少。

《牛津词典》

ECONOMIC studies of the middle classes are plentiful, but opinion-poll research is thin on the ground.

从经济角度对中产阶级进行的调研已经非常多了，然而很少有人对他们进行民意测验。

youdao

This time, to say opportunities are thin on the ground would be a massive understatement.

BBC: Out of work: Your stories

Yet the latter can be useful, particularly when the former are still rather thin on the ground.

ECONOMIST: The United Nations

But despite growing recognition of nature deficit disorder, policies aiming to tackle it appear thin on the ground.

BBC: Nature deficit disorder 'damaging Britain's children'