| 单词 | 时而兴高采烈 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔elevation〕He was subject to periods of elevation and wretched depression.他时而兴高采烈,时而垂头丧气。英汉大词典〔pattern〕In this type of mental illness, the usual pattern is bouts of depression alternating with elation.这种精神病通常的发病症状是时而萎靡不振，时而兴高采烈。剑桥高阶 |
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