Coral reefs, for example, are extremely sensitive... 例如珊瑚礁
But we have an extremely capable surgical team, and I can... 但我们拥有杰出的医疗小组 我可以
but they are using side channels. It is extremely interesting. 但实际上它们经常会游进支流中 特别有意思
Following the dolphins in the murky water is extremely challenging. 在浑浊的水中跟随印度河豚十分困难
Diving near fishing nets is extremely dangerous, 在渔网附近潜水是非常危险的
so it is extremely difficult to find in the gloom. 因此它很难在黑暗中被发现
Barely half a metre long, this little shark is extremely vulnerable. 这条只有半米长的鲨鱼非常脆弱