private waterway

例句：

1. 1.This is a private meeting between the CEO and the board of directors.
   这是首席执行官与董事会之间的一次私人会议。
2. 2. The private sector accounts for a significant portion of the economy.
   私营部门占经济的一大部分。
3. 3. Private schools offer a more personalized education experience than public schools.
   私立学校提供比公立学校更个性化的教育体验。