Down eyelash: brush the eyelash at Z-shaped line with vertical brush.
下睫毛: 将睫毛刷竖起,用刷头以Z字型左右来回刷拭.
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He'd let me down more than once so the next time he asked me for a favour I gave him the brush off.
他已不止一次为难我,因此下次他求我帮助时,我也让他碰碰钉子.
《简明英汉词典》
Using either a circular or jiggling up-and-down motion, brush this area with your toothbrush.
牙刷以圆周或者上下簸动的方式来刷这块区域.
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