a. free of extraneous elements of any kind
s. free from discordant qualities
s. concerned with theory and data rather than practice; opposed to applied
a. (used of persons or behaviors) having no faults; sinless
a. 纯的, 纯净的, 纯洁的, 清白的, 完美的, 无瑕的, 抽象的
[医] 的, 纯净的