名词
中文翻译：变性
同义词：
['gender transition', 'gender reassignment']
例句：
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1. He decided to undergo a sex change surgery.
他决定接受变性手术。
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2. The family underwent a sex change when their son was born.
当儿子出生时，这家人进行了性别改变。
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3. Many people choose to undergo a sex change for various reasons.
许多人出于各种原因选择进行性别改变。