The radical decline in sea ice around the Arctic is at
least 70% due to human-induced climate change, according
to a new study, and may even be up to 95% down to humans
–rather higher than scientists had previously thought.
1. Arctic: 北极圈；北极
Example: The polar bear's habitat is the icy waters of the Arctic.
Example: I was induced to come against my will.
3. previously: 先前；在此之前
Example: Previously he was obviously envious of my success.