Definition: able to continue over a period of time Level: C1
政府推广可持续发展以确保长期繁荣。
The government promotes ___sustainable development to ensure long-term prosperity.
可持续发展的概念对后代至关重要。
The concept of ___sustainable development is crucial for future generations.
可再生能源比化石燃料更可持续。
Renewable energy sources are more ___sustainable than fossil fuels.
