工厂关闭后，工人们需要参加再培训以适应新的工作机会。

After the factory closed, workers needed ___retraining to adapt to new job opportunities.

公司为员工安排了为期两天的再培训，以掌握最新的安全规程。

The company arranged a two-day ___retraining program for employees to learn the latest safety protocols.