The old barges, once used to transport building materials, coal and food from the Port of London, have spent more than 30 years moored in Essex.
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"There's a subreddit [community] for everything," adds the digital consultant for charities and non-profit who spends his time looking at subjects such as politics, tech and digital marketing.
这次最有意思的发现是：上过太空的这只鼠妈妈，居然比普通小鼠还能生。