| 单词 | 第二档 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔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美国传统〔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美国传统 |
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