单词	a flat speech
释义	a flat speech 单调的演说言语
随便看	selenium compound Selenium Compounds Selenium concentration selenium conductive cell selenium conductive photocell selenium conent selenium-containing polysaccharide selenium-containing protein selenium containing protein saccharide selenium-containing protein saccharide selenium containing tRNA selenium-containing tRNA selenium contamination selenium content selenium con-tent Selenium content of grain selenium copper selenium-copper alloy selenium cystine selenium deficiency selenium deficiency disease selenium dehydrogenation selenium dependent glutathione peroxidase selenium-dependent glutathione peroxidase selenium deposit