例句與造句

1. To facilitate drainage of groundwater and to maintain water flow , permeable rocks will be used for recompaction . filter layer and weepholes will also be installed . these will guarantee the normal flow of groundwater
   為促進排水及保持正常水流，工程將使用具滲透性的石塊作重新壓實，同時安裝過濾層及疏水孔，以確保地下水仍可如常流出。
2. It's difficult to find recompaction in a sentence. 用recompaction造句挺難的