| 41. | rubber car tyres |
| 橡胶汽车轮胎
|
| 42. | a pencil with a rubber on the end |
| 一端带橡皮的铅笔
|
| 43. | a pack of cards with a rubber band round them |
| 用橡皮筋捆着的一副纸牌
|
| 44. | a rubber johnny |
| 橡胶避孕套
|
| 45. | wrapped in rubber casing |
| 包在橡胶套中
|
| 46. | a cane with a rubber tip |
| 带橡皮头的手杖
|
| 47. | produce rubber from petroleum by synthesis |
| 以合成法用石油制取橡胶
|
| 48. | synthesize diamonds, rubber , fuel, etc |
| 用合成法制造钻石, 橡胶, 燃料等
|
| 49. | synthetic diamonds, rubber , etc |
| 人造钻石, 合成橡胶
|
| 50. | a rubber seal in the lid of a jar |
| 罐子盖儿里的橡皮密封圈
|