n. the fundamental assumptions from which something is begun or developed or calculated or explained
n. the most important or necessary part of something
n. 基础, 主要成分
[化] 基底
1. The basis of a good friendship is trust.
良好友谊的基础是信任。
2. We need to find a solid basis for our argument.
我们需要为我们的论点找到一个坚实的基础。
3. The teacher explained the basis of the scientific method.
老师解释了科学方法的基础。