您要查找的是不是：
- It's too hot to concentrate on book. 熱得不能集中心思看書。
- Don't put me off when I'm trying to concentrate. 我正要集中注意力呢，別打攪我。
- She felt ill. She went to work, however, and tried to concentrate. 她病了。然而她照舊去上班，並且儘力集中精神工作。
- Tom finds it difficult to concentrate. 湯姆發現很難集中注意力。
- Having failed my French exams, I decided to concentrate on science subjects. 我因法語考試不及格而決心專攻理科。
- He wanted to concentrate on a single issue. 他要集中在單一的問題上。
- A convex lens is used to concentrate rays of light. 凸透鏡用於聚集光線。
- A planoconvex lens used to concentrate light. 凸透鏡用來聚光的凸鏡
- He would do well to concentrate more on his work. 他最好還是更加集中精力在工作上。
- He tried to concentrate on Thomson. 他儘力把注意力集中到湯姆森身上。
- Don' t put me off when I' m trying to concentrate. 我正要集中注意力呢; 別打攪我.
- To concentrate efforts on one part of the game. 特長,在某一方面特別突出。
- I'm trying to concentrate on my job right now. 我現在正試著要專心工作。
- We need to concentrate on the matter in hand. 我們需要關注手頭的這件事情。
- He scrunched up his face, trying to concentrate. 他皺起眉頭努力集中精神。
- We also have to concentrate on the FA Cup final. 另外，我們還必須集中精力於足總杯決賽。」
- To concentrate(one's interests) upon oneself. 使內向使對自己發生興趣
- A racking headache made him unable to concentrate on his study. 折磨人的頭痛使他不能全神貫注地學習。
- They chose to concentrate on simpler and more durable hardware. 他們選擇加強更簡單牢固的武器。
- "We have to concentrate on not conceding goals. 「我們必須集中精力保證不丟球。
