彩虹当空、雨后彩虹、五彩缤纷、弧状虹霓、白虹贯日、长虹、虹霞、白虹、彩桥、悬挂。彩虹当空[cǎi hóng dāng kōng ]雨后彩虹[yǔ hòu cǎi hóng ]七色彩虹 [qī sè cǎi hóng ]弧状虹霓[ hú zhuàng hóng ní ]白虹贯日[bái hóng g