Really, really good analysis by The Pudding.

When these shows resurfaced, they were full of these weird jumps, signaling that scenes were removed during censorship because someone somewhere thought it would be inappropriate or illegal to stream such content.

[...]

77 of the first 100 episodes had at least one edit, amounting to 206 removed scenes.

[...]

I categorized these scenes, among which sex, LGBTQ+ (and atypical heterosexual relationships), as well as disrespect toward China or the country’s allies are the most common ones. The four other topics account for a rather small portion but are still worth mentioning: illegal actions, religion, unhealthy addictions, and miscellaneous.

[...]

This added up to over one hour of deleted scenes, or nearly three full episodes of purely censored content.

Source and analysis by The Pudding.

The author analysed all the censored cuts out of TBBT and categorised them in 7 different ways (explained at the end of the article).

Very nicely done, showing side by side comparison of the censored and original version.