labored
[ˈlebəd]
adj.
吃力的，谨慎的;
v.
努力争取(for)( labor的过去式和过去分词 );
苦干;
详细分析;
（指引擎）缓慢而困难地运转;
例句:
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While he labored away, she let herself daydream.
来自NEWYORKER
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I was close enough to the elk to hear its labored breathing.
我离那头麋鹿非常近，能听见它吃力的呼吸声。
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They have labored to complete the job.
他们努力完成这一工作。
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They labored under the disadvantage of not having enough money.
他们苦于得不到足够的资金.
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The questions are at once labored and absurd.
来自NEWYORKER
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It should never sound labored; it should sound like a sunrise.
来自WSJ