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新东方-柯林斯雅思备考词典
optimism
英 [ˈɒptɪmɪzəm]
[NOUN]
1. [U 不可数名词] 乐观主义
Optimism is the feeling of being hopeful about the future or about the success of something in particular.
双语例句
例：The Indian prime minister has expressed optimism about India's future relations with the US.
印度总理对未来印美关系表示乐观。