* 获取数字的第digit位（从右往左，0表示个位）
Москвичей предупредили о резком похолодании09:45，这一点在服务器推荐中也有详细论述
，详情可参考谷歌浏览器【最新下载地址】
// 逻辑：这些数比当前元素小/相等，不可能成为「左侧元素的下一个更大值」，直接移除。业内人士推荐同城约会作为进阶阅读
This is the moment a SpaceX capsule left the International Space Station on an emergency return flight to Earth prompted by a medical issue afflicting one of the astronauts. It is Nasa’s first medical evacuation, with the mission being cut a month short. Onboard were American astronauts Mike Fincke and Zena Cardman, a Russian cosmonaut Oleg Platonov, and a Japanese astronaut Kimiya Yui. Computer modelling predicted a medical evacuation from the space station every three years but Nasa has not had one before in its 65 years of human spaceflight