<div layer1="text-s"></div><div class="tz-paragraph">从副驾A柱下来沿门槛向后又沿后座边上朝上走</div><div layer1="text-e"></div><br /><div layer1="img-s"></div><div class="tz-picture"><img src="http://club2.autoimg.cn/album/g33/M06/E9/85/userphotos/2025/08/07/10/500_ChxpVmiUFdiAXPhTAAeuQ7A0-vM875.jpg" style="height:1104px;width:828px"  /></div><div layer1="img-e"></div><br /><div layer1="img-s"></div><div class="tz-picture"><img src="http://club2.autoimg.cn/album/g33/M0A/E9/91/userphotos/2025/08/07/10/500_ChxpVWiUFdqAQ-_WAAnFpJS-ZlE058.jpg" style="height:1104px;width:828px"  /></div><div layer1="img-e"></div><br /><div layer1="img-s"></div><div class="tz-picture"><img src="http://club2.autoimg.cn/album/g33/M0A/E9/91/userphotos/2025/08/07/10/500_ChxpVWiUFdyAHVQcAAx1VEGmmmg390.jpg" style="height:1104px;width:828px"  /></div><div layer1="img-e"></div><br />

请问这个水管是干嘛用的？