| 单词 | 但他不能确定 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔attracted〕He wasn't sure he'd got it right, although the theory attracted him by its logic.该理论的逻辑性吸引了他，但他不能确定自己的理解是否正确。柯林斯高阶〔swear〕Behind them was a confusion of noise, perhaps even a shot, but he couldn't swear to it.他们身后响起一片嘈杂声，也许还有枪击声，但他不能确定。柯林斯高阶 |
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