After testing longer tweets with some people since late September, Twitter is giving the feature to everyone.
在去年9月底在部分用户中测试长推文后，推特正向所有用户开放这项功能。
All Twitter users except those tweeting in Chinese, Japanese and Korean languages will now be able to tweet up to 280 characters, the company said.
该公司日前表示，除使用中文、日文和韩文发推的用户外的所有推特用户，现在都将可以发表最多280个字符的推文。
Twitter decided to permanently expand its iconic 140-character restriction after users with access to the test spent more time on the platform and received more engagement, like retweets and likes, from the longer tweets.
由于参与测试的用户刷推特的时间增加，且其长推文收获的转发和点赞等互动更多，因此推特决定永久扩展其标志性的140字符限制。

"During the first few days of the test many people Tweeted the full 280 limit because it was new and novel, but soon after behavior normalized," wrote Twitter product manager Aliza Rosen in the blog post.
推特产品经理阿里扎·罗森在博文中写道：“在测试的头几天里，许多用户就发送了280个字符的信息，因为很新鲜、很独特，但不久之后，发送行为就规范了许多。”
"We saw when people needed to use more than 140 characters, they Tweeted more easily and more often. But importantly, people Tweeted below 140 most of the time and the brevity of Twitter remained."
“我们看到，当用户需要发送超过140字符的信息时，他们处理起来更简单了，发送的频率也提高了。更重要的是，用户大部分时间发送的信息不会达到140字符，Twitter的简洁性得以留存延续。”
But not all 330 million users can tweet at the doubled length.
但并不是所有3.3亿的推特用户可以发表字数增倍的推文。
Chinese, Japanese and Korean will remain at 140 characters "because cramming is not an issue in these languages," the company said.
推特公司称，中文、日文和韩文仍将是140字，“因为这些语言可以用很少的文字表达很多信息。”