n.

1. 易變性
   Don't underestimate the changeability of the weather here.

   不要低估了這裡天氣的易變性。

2. 可變性
   In the next several years there could be 10 different research groups working on the project. This changeability will allow us to advance technology continuously.

   在今後幾年中可能會有十個不同的研究小組從事該專案的工作。這一可變性將會使我們不斷地推進技術發展。