usu·fruct /ˈjuzəˌfrʌkt, sə-/
用益權,使用權,行使用益權
U·su·fruct n. Law The right of using and enjoying the profits of an estate or other thing belonging to another, without impairing the substance.
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usufruct
n : a legal right to use and derive profit from property
belonging to someone else provided that the property
itself is not injured in any way