Lateral force can not brush back and forth otherwise they will damage gums.

不可横向来回用力刷，否则会损伤牙龈。

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Big diameter pipe can be composed of several round steel brush together, at both ends with wire tightly, within the lumen pull brush back and forth, until the metal color, reoccupy cotton brush clean.

大管径管子可由几个圆钢刷组装在一起，两端用铁丝扎紧，在管腔内来回拉刷，直至露出金属本色，再用棉纱拉刷干净。

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Brush on the origin of different in history, said the most recorded in history is the story of Penpower brush making, but modern scholars believe that there is a brush back in Penpower existed before.

关于毛笔的起源，在历史上的不同的说，在历史上记载最多的是蒙恬制做毛笔的故事，但近代的学者认为，早在蒙恬之前就有毛笔存在了。

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High beta tech yesterday provided some cash flow opportunities as they gave a small brush back pitch for the Bears.

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At several times since the 1930s, governments have used the drug card, whether to lean on dispensible foreign dictators or to brush back homegrown countercultures.

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Place the brush at the back of the nail (slightly away from the cuticle) and ease it lightly toward the cuticle line, then float the brush down the nail toward the tip.

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