A painter can spend considerable time selecting the appropriate brush tips and sizes.

画家往往花费相当长的时间来选择形状和大小合适的画笔。

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We must allow ugliness get into the art, but depiction of ugliness should be of some positive value between the brush tips so that the ugly could turn into something ideal.

我们必须允许丑进入艺术，但丑的描绘应该在笔锋之外透露出某种积极的价值取向，使丑变成理想化的东西。

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Brush up on daily dental care tips, and know which signs and symptoms deserve a dentist's attention.

按照日常牙科保健技巧仔细刷牙，并了解哪些征兆和症状值得去看牙医。

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