麻省宇航服，全称为重力负荷对策紧身衣(GLCS)，是有弹力网布制成。
The MIT suit, called the Gravity Loading Countermeasure Skinsuit (GLCS), is made of elastic mesh.
如果上面的网布看起来呈拉伸或者撑起来的样子，那就说明脚在中底上打滑了，或者大底的花纹已经磨光了，就该买新跑鞋了。
If the upper appears pulled or stretched so that the foot is sliding off the midsole, or the grooves on the outsole are worn smooth, it's time for new running shoes.
公路网合理等级结构的确定，是公路网规划的组成内容之一，也是公路网布局优化的重要组成内容之一。
The determination of the rational highway grade structure is one part of highway network planning, it also is an important content of highway network layout optimization.
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