| 单词 | 疑难病 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔idiopathy〕A disease of unknown origin or cause.疑难病症：来源或起因不明的疾病美国传统〔perplexing〕It took years to understand many perplexing diseases.许多疑难病症要耗时数年才能搞明白。外研社新世纪〔perplexing〕It took years to understand many perplexing diseases.许多疑难病症要耗时数年才能搞明白。柯林斯高阶 |
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