释义
n.&a. 乐观,乐观主义
例句
1. Pessimism, when you get used to it, is just as agreeable as optimism. 悲观主义者,当你习惯它之后,就和乐观主义者一样令人惬意了。 2. They professed optimism about the outcome. 他们对结果表示乐观.