In the US alone, 127 billion plastic bottles are purchased every year, according to one estimate.
// 原因：先处理右侧元素（含循环部分），把结果存在栈里，供左侧元素直接使用
，这一点在同城约会中也有详细论述
"It should not have cost the taxpayer tens of billions of pounds to build a railway that no-one wants and brings so much destruction," Smith says.
Fashion week always brings big names to London, and this year's events have been no different.