除了发生过几件不幸的事情（包括一次导致一人被咬伤两只狗被咬死的北极熊袭击事件），头两年的航程出奇地顺利。

Despite several mishaps—including a polar bear attack that ended with one crewman bitten and two dogs dead—the first two years of the journey were oddly easy.

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只有当狮子和老虎年老体衰到不能捕捉到像鹿和其他小动物这些日常食物时，它们才会咬死并吃掉人。

Lions and tigers only kill and eat men when they have grown too old and too weak to catch their usual food, such as deer and other small animals.

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一条饥饿的鱼能够一口咬死其猎物。

A hungry fish can kill prey with a quick bite.

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