Q: "footprints were sunken to their shins." とはどういう意味ですか?
A: If this is from the ''Book Thief'' it meant that the footprints of whoever was kicking them had sunk into their shins -- literally.
Q: have zero footprints とはどういう意味ですか?
A: "zero footprints" means that he leaves no trace behind
Q: footprint expansion とはどういう意味ですか?
A: It's talking about how when a town or city gets bigger, it's physical boundaries get bigger, and also the impact of it widens.
Q: footprint?? とはどういう意味ですか?
A: QAの全文をご確認ください


Q: footprint と foot-trace と Human beings aim to reduce their carboon footñrint / foot-trace はどう違いますか?
I’ve never heard the expression “foot-trace”.
“Tracks” is often use for footprints,

“I followed his tracks”

but that could also include any signs such as bits of cloth left behind on a thorn bush, or a dropped item.
Q: footprints in the snow と footprints on the snow はどう違いますか?
A: footprints in the snow is more natural
Q: footprint と footstep はどう違いますか?
A: Footprint is mark that you leave on ground when you walk and footstep it a step that you make while walking, you walk in steps, hope you understood


Q: footprint は 英語 (イギリス) で何と言いますか?
A: QAの全文をご確認ください
Q: footprint は 英語 (アメリカ) で何と言いますか?
A: QAの全文をご確認ください


Q: I looked back at my footprint of the sand. この表現は自然ですか?
A: ​‎I looked back at my footprint in the sand.

​‎I looked back at my footprints in the sand.
Q: - I stumbled up with footprints and wild pig traces.
- Moreover it seems they were here recently.
- Perhaps it's roe deer traces. They (traces) just become blurred and looks bigger now.
- Regarding to footprints, I assume here were hunters.

A: I stumbled upon footprints and wild pig tracks.
- Moreover, it seems they were here recently.
- Perhaps it's roe deer tracks that just became blurred and look bigger now.
- Regarding the footprints, I assume there were hunters here.
Q: Whose footprints are these?
It's an elephant.
No, it's too small.
Who else could it be?
A: What kind of footprints are these?
/what kind of footprint is this?
It's an elephant's.
No, they're too small./No, it's too small.
What else could it be?
Q: Look at these footprints! Your feet are dirty! You should wipe your feet before you go inside.
A: You probably mean "come inside". "Go inside"sounds like you are talking about a place *away from* the speaker.
Q: I've obliterated a my footprint. この表現は自然ですか?
A: I've erased my footprints.
I've covered up my footprints.
I've gotten rid of my footprints.

Obliterated is too extreme to use in this situation.