building up

例句：

1. 1. We need to build up our team spirit to achieve the goal.
   我们需要建立团队精神以实现目标。
2. 2. The company is building up its sales network in new markets.
   该公司正在新市场建立销售网络。
3. 3. The government is trying to build up public trust by releasing more transparent information.
   政府正试图通过发布更多透明的信息来建立公众信任。