| 1. | They will react with ammonia to form amidines . 它们与氨反应形成脒。 |
| 2. | The mist began to form outside the windows . 舷窗外升起了浓雾。 |
| 3. | Particulars are too meagre to form a decision .. 详情不足,难以作出决断。 |
| 4. | Particulars are too meagre to form a decision .. 详情不明,难以作出裁断。 |
| 5. | We wish to form a couple with one from each sex . 我们要从中选一对,男女各一。 |
| 6. | Some larvae extend the galleries to form niches . 许多幼虫将坑道延伸扩大成壁龛。 |
| 7. | They united to form a club . 他们齐心协力办一个俱乐部。 |
| 8. | Cells fit together to form a continuous sheet . 细胞互相嵌合在一起,形成连续的薄层。 |
| 9. | The oxygen and the carbon combine to form carbon dioxide . 氧和碳化合,形成二氧化碳。 |