单词：chromosomal abnormality
chromosomal abnormality的用法和样例：
例句
- Chromosome abnormality is an important factor involved in male infertility and gonadal hypoplasis.染色体异常是影响男性不育和性腺发育不全的重要因素。
- The majority of aberrations are sporadic although on rare occasions a chromosomal disorder is directly inherited.尽管偶尔可见一种染色体疾病是直接遗传的，但是大量的染色体异常是散发的。
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