I remained for some time endeavouring to engage Mr Campbell in conversation.我有好一段时间仍然力图使坎贝尔先生也参与进谈话中来。The act indemnified the peace officers if they killed any of the mob in endeavouring to suppress such riots.如果治安官员在力求平定这样的暴乱过程中杀了人，此项法规会给他们以法律保障。They are endeavouring to protect trade union rights.他们在竭力捍卫工会的权利。