He said by an optimistic estimate, it would take between 10 and 20 years for the reef to recover.

他说，根据乐观的估计，大堡礁将需要10年到20年来恢复。

youdao

He said by an optimistic estimate, it would take between 10 and 20 years for the reef to recover.

他说，根据乐观的估计，大堡礁将需要10年到20年来恢复。

youdao