不要用“双周”之类的词，因为这有可能产生歧义——是两周还是每隔一周？
Don't use the word "biweekly." It has two meanings: twice a week and every other week.
网站的Alertbox部分是一个讨论当前可用性问题的双周专栏。
Check out the Alertbox section, a bi-weekly column about current issues on usability.
本文对双周期聚焦系统的磁路进行了系统的研究。
This paper studies systematically the magnetic circuit of a dual period focussing system.
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