Diving into unsafe water can lead to serious injuries.

潜入不安全的水域会导致严重的伤害。

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But while you can learn a lot on your own diving into an unknown area, your education can be greatly accelerated when you have an experienced person to check in with or to lead you.

尽管在未知的领域中，您可以通过自学的方式学到很多知识，但如果有一个经验丰富的人引导或带领您进行学习，那么将可以极大地加速学习过程。

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But in a lake where accidentally swallowing the water while diving could lead to near-instant asphyxiation, no one was in a hurry to find out what it might be.

但是对于这种潜水时如果不小心呛水会导致立即窒息的湖，没有人急着探究这究竟是怎么回事。

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The visitors took the lead through a diving Richard Garcia header from Robert Koren's cross.

BBC: Preston 0-2 Hull City

St Ledger restored the Republic's lead with a diving header at the far-post from Stephen Hunt's pinpoint free-kick.

BBC: Rep of Ireland 2-2 Italy

Skirving marked his return to the starting line-up, in place of injured Wales international Michael Owen, by diving in low after the break to extend Sarries lead.

BBC: Saracens 37-13 Bristol