- 释义：
- n. 乐观，乐观主义
- 例句：
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His optimism contrasted sharply with the low morale of his supporters.
他的乐观情绪与他的支持者的低落的士气形成了鲜明的对照.
换一句
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Despite his misfortunes, his faith and optimism remained intact.
虽然他遭到一连串的不幸, 他的信心和乐观丝毫未减.
换一句
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The president struck a note of warning against over - optimism.
总统的话有警告大家不要过分乐观的暗示.
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