switch over[英][switʃ ˈəuvə][美][swɪtʃ ˈovɚ]
（使）交换位置; （使）变换，转换;
例句:
1.
As egg producers switch over to the new cages and ramp up, shortages will ease.
随着鸡蛋生产商在改用新的笼子后恢复生产，鸡蛋短缺的状况会有所缓解。
2.
Customers who switch over to crm online before june 30, 2011 will receive an incentive of up to$ 200 per user, which can be used for availing services such as migrating data or customizing the solution.
客户在2011年6月30日前切换到crm online将收到高达200美元援助，可用于购买支援服务，例如
数据迁移或定制的解决方案