簡單對話:(安全篇) 17. Just In Case

A: Why are you bringing a map?

B: I don't want to get lost on our hike.

A: We won't. I have a GPS.

B: There's not always signal in the mountains.

A: Maps aren't as accurate as GPS.

B: We don't always have to use the map.

A: Why bring it, then?

B: Like I said, it's just a safety tool.

A: I think it's just more weight in your backpack.

B: Better safe than sorry.

A: I can't argue with that. Let's get going.

B: Lead the way!

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