1、 Sites like Twitter, with postings of no more than 140 characters, are creating and reinforcing the habit of communicating in micro-bursts.
像 Twitter 这样发帖不超过140字的网站，正在培养和加强人们用简短文字进行沟通的习惯。
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2、 Both sides have been reinforcing their positions after yesterday's fierce fighting.
在昨天的激战后，双方一直在增援各自的阵地。
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