主旨演讲者的发言乏味无聊，一半的听众都在看手表。
The keynote speaker delivered an insipid address that had half the audience checking their watches.
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解释
insipid 是形容词，意为“乏味的、无趣的”，形容演讲或表演缺乏吸引力，令听众昏昏欲睡。
The keynote speaker delivered an insipid address that had half the audience checking their watches.
insipid 是形容词，意为“乏味的、无趣的”，形容演讲或表演缺乏吸引力，令听众昏昏欲睡。