| 1. | The walls of york were strong defences . 约克郡的城墙曾经是坚固的防御工事。 |
| 2. | We are on board a stout ship . 我们坐的是一艘坚固的巨轮。 |
| 3. | Here the enemy's defences were the most formidable . 这里敌人的防御工事是最坚固的。 |
| 4. | The frame of an airship is made of light but strong metal . 飞船的框架是用轻而坚固的金属制成的。 |
| 5. | A rigid, precise turntable is attached to the laboratory floor . 一架坚固的精密的转台被固定在试验室地上。 |
| 6. | The enemy was strongly entrenched upon the other side of the river . 敌人在河的彼岸以坚固的壕沟防护自己。 |
| 7. | These men sought new and sound bases for the erection of knowledge . 这些人要为其知识的建立寻找新的坚固的基础。 |
| 8. | Solid rock and rushing water reflect the permanence and impermanence of life itself . 坚固的岩石和奔腾的流水反映出生命本身的永恒和短暂。 |
| 9. | We should have a good pad in our right hand to protect our middle eastern interests . 我们应当用右手拿着坚固的盾牌去捍卫我们在中东的利益。 |
| 10. | They are also seeking ways to build stronger fuel tanks or to make the fuel less explosive . 他们还正在设法制造更加坚固的油箱或使燃油不易爆炸。 |