[mass noun]the showing of something's existence or truth by giving proof or evidence 证明,证实 it is not capable of mathematical demonstration. 这无法用数学方法证明。 [count noun]his demonstration that feature films could be both art and social treatise. 他关于故事片可同时是对艺术和社会问题的探讨的证明。 ■the outward showing of feeling 感情流露(或表达) [count noun]physical demonstrations of affection. 爱意的肢体表达。 ■[count noun]a practical exhibition and explanation of how something works or is performed 示范,演示 a microwave cookery demonstration. 微波炉烹调演示。
a public meeting or march protesting against something or expressing views on a political issue 示威集会,示威游行
派生 demonstrational adjective 语源
late Middle English (also in the senses 'proof provided by logic' and 'sign, indication'): from Latin demonstratio(n-), from demonstrare 'point out' (see demonstrate). Sense 2 dates from the mid 19th cent