| 单词 | 第二档 |
| 释义 | 〔second〕The transmission gear or gear ratio used to produce forward speeds higher than those of first and lower than those of third in a motor vehicle.第二档：机动车中使前进速度比第一档高而比第三档低的传送档或档级〔third〕The transmission gear or gear ratio used to produce forward speeds next higher to those of second in a motor vehicle.第三档：机动车中用于产生的比第二档更高一级速度的变速档或传动比 |
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