A thing which plunges or may be plunged; esp. an instrument or part of a mechanism which works or is… Railways. Any of various devices used to…
| 单词 | θ202693 |
| 释义 | society > travel > rail travel > railway system or organization > [noun] > device for operating signals or points (1) plunger1877 A thing which plunges or may be plunged; esp. an instrument or part of a mechanism which works or is… Railways. Any of various devices used to… |
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