1. No human endeavour or thought would be unchanged by it. 任何人类的努力和想法都会因此改变。
2. C. Leave the current project schedule unchanged and work the issues as they arise next year. 现行的项目进度计划保持不变，等下一年这个问题发生时再解决。
3. Although it remains virtually unchanged, unlike fuel and weather, topography can either aid or hinder wildfire progression. 虽然地势实际上是不变的，不像燃料和天气，但它可以帮助或隐藏火的进行。
英英解释
adj.
1. not made or become different
2. remaining in an original state
