1、
But summer vacation hasn't always been a birthright of U ． S ． schoolchildren ．
但暑假并不总是美国学生与生俱来的权利。
高考真题- 2018 浙江 阅读B
2、
Being a kind of animal, human beings have their birthright of the freedom of residence and movement.
人作为动物，享有居住和迁徙自由的本能权利。
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