Members of a golf club in Australia have something more to worry about than just their swing - playing on what is thought to be the world's first shark-infested course. Jonathan Samuels reports.

澳洲一高尔夫球场来了一批不速之客，俱乐部会员在去池塘边捡球时，发现一条鲨鱼竟然侵入高尔夫球场，令到这里打球的人不得不要提起精神。

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He took a strange cocktail of 17 vitamins and supplements, including shark cartilage pills, and imagined the metastases were rats and he was chasing them with a club.

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