Lift your brow frequently, in puzzlement or apprehension or thought, and "horizontal forehead creases," the very common "worry lines," will appear and lay like a musical staff across your forehead.
在迷惑或者忧虑或者思索的时候，经常会挑动眉毛，这会让“额头上的横向皱纹”，也即通常所说的“忧思纹”，就会出像，看起来就像额头上画了个五线谱。
Many mining venture build an anti-horizontal ramp as the subservient tunnel besides the main shaft. They use large tram to carry equipment and staff through the ramp.
很多矿山和大型企业在主运输巷道外单独修建一条负水平的斜坡道作为辅助运输巷道，利用大型矿用胶轮车通过井下斜坡道运送设备、人员。
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