"I just have a lot of respect for people that have put a lot of years into gaining practical skills like fabricators and machine operators," said Ellis, who is also an art teacher at Stretford High School.
In its defence a Reddit spokesperson said: "Reddit's policies prohibit manipulated content and inauthentic behaviour and our safety teams enforce these rules with a combination of human review and sophisticated automated tooling that can detect this content at scale.
。关于这个话题，爱思助手下载最新版本提供了深入分析
国内L4玩家中，小马智行实现“单车盈利”，萝卜快跑在武汉、亦庄两地试点扭亏为盈。文远知行在海外也取得了不错成绩。虽然绝对数量上不占优势，但证明了L4商用是可行的，是能赚到钱的。
There are also some questions around safety.
Additional reporting by Ema Sabljak, BBC England Data Unit