When a propertyowner discovers that oil or natural gas exist beneath property for which a title has been legally and completely obtained, rights to the embedded minerals can be leased to others.
When the lease ends, the property reverts to the owner.
租约到期后,房屋归还业主。
《柯林斯英汉双解大词典》
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Once the commodity rights are leased, the lessee will issue the owner an up-front payment to explore the property and investigate possible ways to extract the commodity.