名词
中文翻译：细丝
同义词：
['thread', 'filament', 'strand']
例句：
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1.The filament of the yarn is thin and delicate.
纱线的纤维很细且脆弱。
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2. The filament of the thread is too thin to be seen clearly.
线丝太细，无法清晰看见。
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3.The filament of the fibers is strong and durable.
纤维的纤维很坚固耐用。