Grammar Note
复数形式为 fractions。
部分；少量
先理解核心含义，再看它在真实句子里的用法。
部分；少量
a small part or amount of something; a piece of a whole
Only a fraction of the students passed the exam.
只有一小部分学生通过了考试。
整体的一部分,尤指较小的一部分
A part of a whole, especially a comparatively small part.
经分馏分离出的混合物组分
a component of a mixture that has been separated by a fractional process
两个数的比(分子和分母),通常上下排列由横线分隔,或同行由斜线分隔
A ratio of two numbers (numerator and denominator), usually written one above the other and separated by a horizontal bar called the vinculum or, alternatively, in sequence on the same line and separated by a solidus (diagonal bar).
整体中的一小部分
a small part or item forming a piece of a whole
She spends only a fraction of her income on rent.
她只把收入的一小部分花在房租上。
The new phone costs a fraction of what the old one did.
这部新手机的价格只有旧手机的一小部分。
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复数形式为 fractions。
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.