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1·He is a double amputee, having lost both his legs below the knee after a climbing accident in 1982, at the age of 17.

1982年的一场事故令他失去了膝盖以下部位，那一年他17岁。

2·The accident was a salutary reminder of the dangers of climbing.

这次事故提醒人们注意登山的种种危险，倒也不无益处。《牛津词典》

3·Did Aron keep on climbing mountains after the serious accident?

那场严重事故发生之后，阿伦还在继续爬山吗？

4·When you go rock climbing, you need to be careful so that you don't have an accident.

攀岩时你要十分留心，这样才不会发生意外。

5·Climbers have the best knowledge of the climbing areas and are an invaluable resource in the event of an accident.

攀岩者对岩场区域的情况最为熟悉，这是在事故发生时非常宝贵的资源。