Haohaoxuexi There is a crack in the pipe. There is a leak in the roof/wall. Is this 'in' correctly used?
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HaohaoxuexiThere is a crack in the pipe. There is a leak in the roof/wall. Is this 'in' correctly used? Should it be on."In" works better. leak: the actual crack or hole. leakage: the act of leaking.
And "There is a leakage in the pipe." what is the difference between leak and leakage.
Thanks