您要查找的是不是：
- a marathon piece of research 马拉松式的研究
- He bit off a large piece of the apple. 他咬下一大块苹果。
- I need a piece of string to tie this parcel up. 我需要一根细绳把这包裹扎起来。
- They were engaged to carryout an important piece of research. 聘请他们来进行一项重要的研究项目。
- She was hit by a piece of falling masonry. 她被建筑物上落下的一块石头砸着了。
- She has the spare figure of a marathon runner. 她有副马拉松运动员般瘦削的身材。
- The boy is daubing a piece of paper with red ink. 那孩子正在用红墨水在纸上乱涂。
- This piece of glass seems to be part of a lamp. 这片玻璃似乎是一盏灯的一部分。
- Corporations that cosponsored a marathon. 共同倡议举行马拉松比赛的公司
- He made a marathon speech of six hours. 他作了长达六小时的马拉松演讲。
- Would you please give me a piece of paper? 能给我一张纸吗？
- It takes a lot of stamina to run a marathon. 跑马拉松需要很大的耐力。
- Just before his father disappeared, Halley had been involved in an exciting piece of research. 原句用了第一个，我觉得用第二个也可以，对吗？
- The meeting was a bit of a marathon. 这次会议有点马拉松赛的味道。
- She tore off a piece of music and then went out. 她匆匆演奏了一支曲子就走出去了。
- Women's faces "give away far more than men", a piece of research suggested recently. 一项新研究表明，与男性相比，女性的面相更能透露出其性格。
- This piece of cloth was eaten by a moth. 这块布被蠹虫蛀坏了。
- The first chapter delimits her area of research. 第一章阐明了她的研究领域。
- A marathon tests a runner's endurance. 马拉松赛可测出一个跑步运动员的耐力
- An outer coat of glaze on a piece of pottery. 外层釉陶器釉面上的第二层釉
