大约，近似，大概

The approximate cost of the project is around $5 million.
该项目的大致成本约为500万美元。
We arrived at the destination approximately two hours later.
我们大约两小时后到达了目的地。
The room is approximately 20 square meters in size.
这个房间大约有20平方米。
Approximately 70% of the Earth's surface is covered by water.
大约70%的地球表面被水覆盖。
She has an approximate idea of what she wants to do next.
她对自己下一步想做什么有一个大致的想法。
Approximately 5,000 people attended the concert last night.
昨晚大约有5000人参加了音乐会。
The meeting will start at approximately 9:30 AM.
会议将在大约上午9:30开始。
The book contains approximately 300 pages.
这本书大约有300页。
It will take us approximately three hours to get there.
到那里大约需要我们三个小时。
Approximately half of the students passed the exam.
大约一半的学生通过了考试。