n.乐观；乐观主义
A mood of optimism pervaded the gathering. 会上充满乐观的气氛。
We view these changes with guarded optimism. 我们以审慎的乐观看待这些变化。
We are influenced by his radiant optimism. 他那具有感染力的乐观主义影响了我们。
In the poem, Tate is speaking his usual blind optimism. 在这首诗里，泰特表达出了他通常的那种盲目的乐观主义。
