1. insist vt.坚持;强调;坚决要求
例句：She insisted on being present at all the interviews
她坚持所有采访自己都要在场。

2. establish vt.建立，创建;确立或使安全
例句：We had already established contact with the museum
我们已经和那家博物馆建立了联系。

3. profitable adj.有利可图的，有益的
例句：Drug manufacturing is the most profitable business in America
制药业是美国利润最丰厚的业务。

4. attend vi.出席;致力于，献身于
例句：Thousands of people attended the funeral
数千人参加了葬礼。
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