Heavy rain and floods in Sydney

The transcript covers an introduction to a zip lock, a discussion about the last slide, and an event that occurred two days later, leading up to the green grass.

What was mentioned about the zip lock?

What does the speaker mean by 'Off on the last'?

How does the speaker express completion in the conversation?

What happened two days later according to the speaker?

What is the significance of 'green grass' in the context?