有很多工作要做，以安全守卫这些珍贵的生态系统为子孙后代。

There is much to be done to safe-guard these precious ecosystems for future generations.

youdao

有很多工作要做，以安全守卫这些珍贵的生态系统为子孙后代。

There is much to be done to safe-guard these precious ecosystems for future generations.

youdao