More gravel is needed to fill the hollow in the drive.
需要更多的砾石来填平车道上的坑洼。
《新英汉大辞典》
2
More gravel is needed to fill the hollow in the driveway.
在车道的凹地上需要填更多的沙砾。
3
The results show that the performances of graded gravel mixture are improved significantly after being treated with cement and lime, especially when fill factor is 0.