Vertical loop




The generic roller coaster vertical loop, where a section of track completes a 360 degree circle, is the most basic of roller coaster inversions. At the top of the loop, riders are completely inverted.
网站首页 情感咨询 情感美文 情感百科 情感生活 学习充电 旧版美文
依恋情感网英汉例句词典收录3870147条英语例句词条,基本涵盖了全部常用英语单词的释义及例句,是英语学习的有利工具。