因公

例句：

1. 1. He went to the office onbusiness.
   他因公去了办公室。
2. 2. She isalways busy with her work, so sherarely has time for personal matters.
   她总是忙于工作，所以很少有时间处理私事。
3. 3. The government officials are attending a meetingin Beijing today.
   政府官员今天正在北京参加会议。