重点词汇
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纤维
fibre; fiber; filament; staple; filamentary
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伸展
spread; stretch; extend; unfold; spread out; run; stretchable; outspread; outstretched; extension
fibre extent
纤维
fibre; fiber; filament; staple; filamentary
伸展
spread; stretch; extend; unfold; spread out; run; stretchable; outspread; outstretched; extension