| 单词 | 波数 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔-waving〕Sound waves, light waves, and radio waves have a certain frequency, or number of waves per second.声波、光波或无线电波等都有特定的频率，或者说是每秒的波数。柯林斯高阶〔barnstorm〕The president travels thousands of miles as he barnstorms the country.总统奔波数千英里, 在全国进行巡回政治演说。外研社新世纪〔barnstorm〕The president travels thousands of miles as he barnstorms the country.总统奔波数千英里，在全国进行巡回演说。柯林斯高阶 |
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