Be Assiduously Engaged In Writing手不停挥
be engaged in sports参加活动
be engaged in agriculture从事农业;务农
to be engaged in从事;忙于
be engaged in politics参与政治事务;从政热
be engaged in reading正忙着读书
be engaged in business参与交易;从事业务
be engaged in teaching从事教学;详细翻译
Be Engaged In Researches从事研究