camera.position.z = 40：这一步很关键！默认情况下，物体在坐标原点 (0,0,0)，相机也在原点。如果你不移开相机，你就跟物体“贴脸”了，什么也看不见。我们把相机往后拉 40 米，就能看清全貌了。
// process chunks，详情可参考WPS下载最新地址
СюжетСпециальная военная операция (СВО) на Украине。同城约会是该领域的重要参考
Feb. 24 — Ascended Heroes Mini Tin Displays。业内人士推荐夫子作为进阶阅读
The rocket rose 80 feet into the air and exploded. Had the chemicals been packed slightly differently, he would have been blown to pieces.