| 释义 |
DEFINITIVE EXAMPLES 权威例句〔carboxyl〕The univalent radical, COOH, the functional group characteristic of all organic acids.羧基：一价根COOH，一切有机酸的功能组合的性质美国传统〔combination〕Certain combinations of sounds are not possible in English.在英语中，某些音是不可能组合的。朗文当代Words are the smallest semantic units that can combine to form new sequences with different meanings.单词是能组合起来构成不同含义的新词序的最小语义单位。剑桥国际 |