| 1. | It is only when money wages move that instability declares itself .
只有当货币工资移动时，不稳定才会出现。 |
| 2. | The waves eat into them only when they are charged with sand or pebbles .
只有挟带沙砾和碎石的波浪，才起侵蚀作用。 |
| 3. | Only when a reservoir is built here ， can we solve our irrigation problem .
除非在这里修个水库，才能解决灌溉问题。 |
| 4. | Infra-red absorption takes place only when there is a change of dipole moment .
红外吸收峰仅在有偶极矩变化时才能实现。 |
| 5. | A clear moire pattern is obtained only when the model is negligible .
仅当模型的双折射效应可以忽略时，才能获得清晰的波纹图案。 |
| 6. | Liquid fire also burn only when the surface of the liquid is in contact with the air .
液体燃料也只有在其表面接触空气时才会燃烧。 |
| 7. | Only when the stress reaches the "ultimate strength" does failure, i. e., breakage, occur .
只有当应力达到极限强度时才会造成损坏。 |
| 8. | The betaine will collapse to the alkene only when these two functions are eclipsed .
只有当这两个基团移至重迭位置时碘盐才能裂解为烯烃。 |
| 9. | Only when agriculture is fully developed can industry have sufficient materials and markets .
只有农业发展了，工业才有足够的原料和市场。 |
| 10. | Newton's first two laws hold only when observed in unaccelerated reference frames .
牛顿第一、第二定律只有在非加速的参照系中作观察时才是成立的。 |
