positive
习惯用语be positive about [of]1.■确信, 确知特殊用法black positive1.■黑色为正(负极性调制)color positive1.■【摄】彩色正片contact positive1.■接触晒印正片(复制)direct positive1.■【摄】直接正像dupe positive1.■复制正片electrode positive1.■阳极English positives1.■英国实证主义者false positive1.■假阳性Gram positive1.■革兰氏(染色)阳性halftone [screen] positive1.■网线版正片metal positive1.■金属二版, 母版(唱片模版)separation positive1.■分色正片sound positive1.■有声正片