单词	憔悴的微笑
释义	憔悴的微笑 a wan smile
随便看	derivatives of foreign exchange derivatives of fumaric derivatives of hemicellulose derivatives of heparin derivatives of higher order derivatives of hyaluronic acid derivatives of hydroximic acids derivatives of isocyanic acid derivatives of lignin Derivatives of nitrobenzene derivatives of pectin derivatives of phthalocyanine derivatives of polycarboxylic acids derivatives of progesterone derivatives of proline derivatives of rubber derivatives of starch derivatives of thiocarbamic acids derivatives of TRIAZINE derivatives of TRIAZINES derivatives of TRIAZOLE derivatives of TRIAZOLES derivatives of UREA derivatives operation derivative spectra