您要查找的是不是：
- Is this your pencil? No! Is this your eraser? No! 这是你的铅笔吗?不是。这是你的橡皮吗?不是。
- Her mother bought her a pencil eraser. 她妈妈给她买了一个铅笔擦。
- Both were about the size of a pencil eraser. 两个蜘蛛都有铅笔头橡皮的大小。
- There is an eraser in the pencil case. 铅笔盒??市?块橡皮擦。
- He has a rubber in his pencil case. 他铅笔盒里有块橡皮。
- Please repeat the experiment using a wooden ruler, a coin, a pencil and a rubber eraser. 请用一把木尺、一枚硬币、一支铅笔、和一块橡皮，重做这个实验。
- Please equip yourself with a sharp pencil and a rubber for the exam. 请准备一枝尖的铅笔和一块橡皮参加考试。
- Even the best quality rubber will perish with age. 就是最佳质量的橡胶也会因老化而腐烂。
- You can erase pencil marks with a rubber. 你可以用橡皮擦掉铅笔记号。
- I have put the pencil box in her desk. 我已经把铅笔盒放在她的课桌里了。
- Rubber has more resilience than wood. 橡胶有比木头更大的弹性。
- Ring the correct answer with your pencil. 用铅笔圈出正确的答案。
- My professor studies flora of the Palaeozoic Era. 我的教授研究古生代的植物群。
- The message was written in pencil. 这信是用铅笔写的。
- Rubber boots are impervious to water. 橡胶鞋是防水的。
- You may write in biro or pencil. 你用圆珠笔或铅笔书写均可。
- I have not a good hand the whole rubber. 整个一盘牌中我就没有拿到过一手好牌。
- My boy,wipe these wrong words out with a pencil eraser. 我的孩子，把这些错字用橡皮擦掉。
- Concorde inaugurateda new era in aeroplane travel. 协和式飞机开创了空中旅行的新纪元。
- Some say the computer has ushered in a new era. 有人说电脑引入了一个新时代。
