"It's incredibly energy-intensive and the birds use up to 50% of their body mass," he says.
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Виктория Кондратьева (Редактор отдела «Мир»)。关于这个话题，爱思助手下载最新版本提供了深入分析
The barges, which measure between 20 and 32 metres long (66 to 105ft), had to be cleaned and made seaworthy before they could be towed into place and set on to a platform of sediment.