本装置采用圆锥表面磨法对钻头进行后面刃磨，可保证磨出的钻头具有合理的后角，对称精度高。
The device is posterior cutter grinding to drill in cone surface grinding method that it can vouch for drill with reasonable back Angle, and symmetry precision is high.
“生活没有意义，”阿伟说。他在一整夜的轮班里抛光了数百台手机，连指甲都被磨出的灰尘染黑了。
"Life is meaningless," said Ah Wei, his fingernails stained black with the dust from the hundreds of mobile phones he has burnished over the course of a 12-hour overnight shift.
我们需要静下心来，深呼吸，用一种纯粹和回归的眼光看看那些承载了时间和精力的慢工所打磨出的细活。
Now we need to slow down our pace and take a deep breath, to see how soft fire makes sweet malt with pure and back-to-zero eyes.
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