23 Jun 07:32 AM

Question about English (US)

It's about a mass transportation.
1. "when a bus finally stops, it will be packed to the gills."

what is "gills" mean??

2. "if you are lucky enough to push your way on to the bus, you need to hang on, because it's like a sardine can"

can you explain what this sentence mean?

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  • English (US)
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