| 单词 | test value |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔open sentence〕An expression that contains at least one unknown quantity and becomes true or false when a test value is substituted for the unknown.开语句:至少包含一个未知数并且在测验值被替换时出现对或错的数学方程式美国传统 |

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