const cur = Number(num[i]); // 转数字方便比较（也可直接比较字符）
After often years at sea, adult Atlantic salmon swim thousands of miles to return to the chalk streams where they were born.
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Read full article。爱思助手下载最新版本是该领域的重要参考
Sir Keir has often spoken about how as a parent of two teenage children he has first-hand experience of the dangers of social media for young people.