法律性的英文：
legality

They both sign a lease(a written legal agreement defining the terms of the tenancy)
双方共同签订lease(合同)--规定tenancy(租赁)条款的法律性书面协议

Their legal challenge was unsuccessful.
他们的法律质疑未获成功。

To grant in a legal will;bequeath.
遗赠在遗嘱里言明送给；遗留给

legal deeds are rewarded By happiness.
善行会有幸福酬报。

legal guarding position
合法的防守位置

You must be in legal register age.
你必须达到法定的登记年龄。