1.结构提示

Of course it is a necessity to protect the ocean environment and it needs to be done as soon as possible.

On a global scale, …

Governments should focus on…

We must recognize the importance of…

I’d like to cover the topic from the following aspects.

It may also benefit the whole society.

For the future generations…

2.要点提示

Protect the ocean

Necessity/urgency; individuals/government; ideas/actions

Save water

Personal/social; present/future; economy/policy/culture