thin on the ground

US /θɪn ɑn ðə ɡraʊnd/
UK /θɪn ɑn ðə ɡraʊnd/
"thin on the ground" picture
1.

稀少, 很少見

present in small numbers or amounts; scarce

:
Good mechanics are thin on the ground these days.
現在好的機械師很少見
Opportunities for promotion are thin on the ground in this company.
這家公司的晉升機會很少