a. 肯定的, 积极的, 有把握的

[医] 正的, 阳性的

n. the primary form of an adjective or adverb; denotes a quality without qualification, comparison, or relation to increase or diminution

n. a film showing a photographic image whose tones correspond to those of the original subject

a. characterized by or displaying affirmation or acceptance or certainty etc.

a. indicating existence or presence of a suspected condition or pathogen