1. 請(qǐng)集中考慮以下問題。
   Please focus your minds on the following problem.
2. 我累了就無(wú)法集中精力工作。
   I can't concentrate on my work when I'm tired.
3. 吵鬧聲不絕于耳，我很難保持精神集中。
   I found it hard to keep my concentration with such a noise going on.
4. 緊張和疲勞常使人精神不集中。
   Stress and tiredness often result in a lack of concentration.
5. 他集中心思在新計(jì)劃上。
   He focused his mind on his new plan.
6. 改用煤氣集中供暖將節(jié)省大筆開支。
   Conversion to gas central heating will save you a lot of money.
7. 我試圖使思想集中起來，但是我太激動(dòng)了。
   I tried to collect my thoughts but I was too excited.

中的英語(yǔ)翻譯：