牙刷毛一旦磨损就扔掉。
As soon as the bristles on your toothbrush begin to wear, throw it out.
牙刷毛100%用尼龙制作并且从日本进口。
牙刷柄刻有牛骨，牙刷毛由野猪毛或马毛制成。
The handles were carved out of cattle bones and the bristles were made from wild boar or horse hair.
这些时尚的牙刷用100%可回收利用原料制成。牙刷毛100%用尼龙制作并且从日本进口。
These modern toothbrushes made from 100% recyclable material. The bristles are 100% nylon and imported from Japan.
研究人员利用诸如上端有牙刷毛大小细孔的聚合物之类的物质，构搭成细胞可以着床安歇的形状。
Using materials such as polymers with pores no wider than a toothbrush bristle, researchers have learned to sculpt scaffolds in shapes into which cells can settle.
研究人员利用诸如上端有牙刷毛大小细孔的聚合物之类的物质，构搭成细胞可以着床安歇的形状。
Using materials such as polymers with pores no wider than a toothbrush bristle, researchers have learned to sculpt scaffolds in shapes into which cells can settle.
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