unsustainable
UK/ʌnsə'steɪnəb(ə)l/US/,ʌnsәs'teinәbl/
B2
Definitions
adj.
Unable to be kept going over time
不可持续的；无法长期维持的
Root Breakdown
Root-derivedun- (not) + sustainable = not sustainable. Common in economics and environment (unsustainable debt, unsustainable growth).
Root tain still carries 87 more wordsExample Sentences
- 1.
The current level of spending is simply unsustainable.