1.It focuses on the poor life of black slaves and their struggle to achieve freedom, and makes a vehement attack upon the chattel slavery.
它描述了黑奴的苦难生活及为争取自由不懈奋斗的历程，愤怒地揭发和控诉了奴隶制的罪恶。
2.She made a vehement attack on the government's actions.
她对政府的行动作猛烈的抨击。