| 单词 | robot train |
| 释义 | > as lemmasrobot train robot train n. a remotely operated driverless train. ΚΠ 1930 Oakland (Calif.) Tribune 9 May 28 c/3 (heading) Robot trains speed mail in London's tiny subway. 1963 Daily Tel. 9 Apr. 17/4 (heading) Robot train tested with passengers. 2004 Roanoke (Va.) Times (Nexis) 19 Sept. Norfolk Southern hails robot trains as a high-tech way to enhance safety, increase efficiency and save money. < as lemmas |
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