be a fearless adrenalin/ə'dren(ə)lɪn/junkie 是个肾上腺素迷

　　A lot of people think I'm some sort of a fearless adrenalin junkie. But I'm not fearless, I'm scared all the time.很多人觉得我什么都不怕，是个肾上腺素迷。其实我并不是无所畏惧，我一直都感到恐惧。

　　go cave diving inside an iceberg 在冰山内部洞穴里潜水

　　I have led the team to be the first people to go cave diving inside an iceberg.

　　我带领团队成为首次在冰山内部洞穴里潜水的人。

　　unbelievably dangerous and shifting environment 危险至极、千变万化的环境

　　And during those dives inside this unbelievably dangerous and shifting environment, we got pinned down by a ripping current that was like trying to walk against a hurricane-force wind except there we were under water, underneath an iceberg, trying to swim against a current that was too strong to make any headway to get out of this ice cave.在这个危险至极、千变万化的潜水环境中，我们有次被激流困住了，就好像试图在飓风级别的大风中行走，只不过我们在水下、冰川下，试图游过那段激流，可是水流太凶猛，我们没法从冰洞里面逃出来。

　　mind-numbing fear麻痹神经的恐惧

　　I've learned to deal with fear- -- terrifying, mind-numbing fear.我学会了应对恐惧，那种令人生畏、麻痹神经的恐惧。

　　 take a very deep, low breath 做一个慢慢的深呼吸

　　So it's really important for me to just stop, take a very deep, low breath.所以对我而言，我必须停止害怕、做一个慢慢的深呼吸。

　　a dangerous endeavour做的尝试很危险

　　I know it is a dangerous endeavour that I'm involved in.

　　我知道自己做的尝试很危险。