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- 洪水退後地基下陷了（两英尺）。
The foundations sank (two feet) after the flood.
- 獾在这座教堂的地基处打了洞。
Badgers had undermined the foundations of the church.
- 由于地基不牢，这所房子已下陷。
Weak foundations caused the house to subside.
- 这地基不够牢固，无法承受房屋的重量。
The foundations were not strong enough to sustain the weight of the house.
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