| 单词 | 时而忧伤 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔WORRIED/WORRYING〕Dad alternately brooded and raged, and Mum wasn't much better. 爸爸时而忧伤时而愤怒，妈妈也没好多少。朗文写作活用〔now〕Her moods kept changing—now happy, now sad.她的情绪总是变幻不定，时而欢喜，时而忧伤。牛津高阶 |
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