名词
中文翻译：Unknown
同义词：
['idle', 'insignificant', 'trivial', 'worthless']
例句：
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1. The conversation was so idle that it bored me to tears.
这场谈话如此无聊，以至于让我哭得泪流满面。
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2. He found the task insignificant and gave up halfway through.
他发现这项任务微不足道，中途就放弃了。
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3. She spent hours on a trivial project that didn't even pay her bills.
她花了好几个小时在一个琐碎的项目上，这个项目甚至不支付她的账单。