杜克团队向我们演示了颗粒的核心提供了这些化合物，然后这些化合物就黏在了像刷子一样的纤毛上面，而这些纤毛是我们的呼吸道管里用来清除黏液用的。
The Duke team showed that the particle core delivers these organic chemicals onto brush-like surfaces called cilia, which clear mucus from the airway lining.
当焊料处于粘滞状态时，用刷子把多余的焊料清除干净。焊料冷却后，将一条嵌条环绕在阀门的端口。
Remove excess solder with small brush while plastic leaving a fillet around end of valve as it cools.
用掸子将它表面的灰尘掸掉，在冲水前用刷子刷一遍，清除深入缝隙的灰尘。
The surface of the dust with a duster, flushing with brush again, the dust removing deep slot.
用掸子将它表面的灰尘掸掉，在冲水前用刷子刷一遍，清除深入缝隙的灰尘。
The surface of the dust with a duster, flushing with brush again, the dust removing deep slot.
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