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"Optimistic and outgoing" 是一种常用来形容人物性格乐观开朗的说法。"Optimistic" 是"乐观"的意思，来自拉丁语"optimus"，意为"最好的"。
"Outgoing" 是"开朗"的意思，来自英语"go out"，意为"外出"。
例句：
He is an optimistic and outgoing person. 他是一个乐观开朗的人。
She has a very outgoing personality and always makes friends easily. 她性格开朗，总是很容易交到朋友。
Despite the difficult situation, he remained optimistic and outgoing. 尽管处境艰难，他仍然保持着乐观开朗的态度。
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