他的演讲因其真诚和真实性而打动了观众。
His speech moved the audience because of its sincerity and authenticity.
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authenticity英 /ˌɔːθenˈtɪsɪti/|美 /ˌɔθɛnˈtɪsɪti/
解释
authenticity 是由形容词 authentic（真实的、真正的）加上名词后缀 -ity 构成的名词，表示"真实性、可靠性"。authentic 来自希腊语 authentikos，意思是"原作的、权威的"。
His speech moved the audience because of its sincerity and authenticity.
authenticity 是由形容词 authentic（真实的、真正的）加上名词后缀 -ity 构成的名词，表示"真实性、可靠性"。authentic 来自希腊语 authentikos，意思是"原作的、权威的"。