单词学习:unchangeable 形容词
unchangeable
/ʌnˈtʃeɪndʒəbl/
不可改变的,不变的
The fundamental principles of mathematics are unchangeable, as Professor Gu always emphasizes to his students.
数学的基本原理是不可改变的,正如顾老师总是向他的学生们强调的那样。
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