关于气候变化问题的讨论显示出科学家和公众观点之间的鲜明对立。

The discussion on climate change revealed a clear ___polarity between scientists' views and public opinions.

电池的正负极性必须正确连接才能工作。

The ___polarity of the battery must be connected correctly to function.

在句子分析中，'慷慨'这个词具有正向的语义倾向，而'吝啬'则相反。

In sentence analysis, the word 'generous' has a positive ___polarity, while 'stingy' has a negative one.