spent process water

例句：

1. 1. I spent a lot of time studying for my exams.
   我花了很多时间准备考试。
2. 2. The company invested heavily in research and development.
   该公司在研究和开发上投入了大量资金。
3. 3. After the concert, many people were spent on the streets.
   音乐会结束后，许多人在街上闲逛。