Submitted by admin on Mon, 04/21/2014 - 23:52
definition:
Able to be maintained at a certain rate or level; Conserving an ecological balance by avoiding depletion of natural resources
sentence:
Able to be maintained at a certain rate or level:
The challenge for any developing country lies in achieving a level of sustainable economic growth.
Monetary policy alone cannot achieve high and sustainable rates of economic growth.
Conserving an ecological balance by avoiding depletion of natural resources:
It is time to envision and design the plane of sustainable agriculture and dream of it really flying
difficulty:
medium
toefl frequency:
3
toefl classification: