By 2030, according to the Kokoda Foundation, an Australian think-tank, China could have 85-100 submarines.

科科达基金会是澳大利亚的一家智库，据该机构估计，到2030年，中国可能会拥有85至100艘潜艇。

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The couple flew to Port Moresby, Papua New Guinea's capital, and set off on a 60-mile hike along the Kokoda Trail, in the south-east of the country.

这对情侣便飞往巴布亚新几内亚的首都莫尔兹比港，开始沿该国东南部著名景点科科达小径60英里的徒步旅行。

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Researchers have unearthed the remains of about six camps, including fragments of stone tools and food, in an area near the town of Kokoda, said an archaeologist on the team, Andrew Fairbairn.

研究者在科科达附近的小镇发掘出了六个原始棚户居所的遗迹，包括石器工具的残片和一些食物，小组成员安德·鲁菲尔·贝恩透露。

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Researchers have unearthed the remains of about six camps, including fragments of stone tools and food, in an area near the town of Kokoda, said an archaeologist on the team, Andrew Fairbairn.

研究者在科科达附近的小镇发掘出了六个原始棚户居所的遗迹，包括石器工具的残片和一些食物，小组成员安德·鲁菲尔·贝恩透露。

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