unbeknown to短语⁴⁸⁸⁹⁷ 例句 Unbeknown to them, the “ scrap” contained a highly radioactive source used to treat cancer patients. 他们不知道这件“废品”里有一个用于治疗癌症患者的高辐射源。 yeeyan It appears that unbeknown to Bolwell, the future much like President Obama has already arrived. 博尔维尔可能不知道的是，这种未来就像奥巴马一样已经成为现实。 yeeyan