■ adjective
1》 not able to be sustained.
↘ Ecology upsetting the ecological balance by depleting natural resources.
2》 not able to be upheld or defended.
Derivatives
unsustainably adverb
■ adjective
1》 not able to be sustained.
↘ Ecology upsetting the ecological balance by depleting natural resources.
2》 not able to be upheld or defended.
Derivatives
unsustainably adverb
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004