单词学习：unimaginably 副词 (Adverb)
unimaginably
/ˌʌnɪˈmædʒɪnəbli/
adv. 难以想象地，不可思议地
The universe is unimaginably vast, as Professor Gu often reminds us in his astronomy lectures.
宇宙是难以想象地广阔，正如顾老师在他的天文学讲座中经常提醒我们的那样。
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