Do you see a difference in meaning between the three sentences?

Cheetahs run at an average speed of 60 kilometers per hour.
A cheetah run at an average speed of 60 kilometers per hour.
The cheetah run at an average speed of 60 kilometers per hour.

Sehen Sie eine Übersetzung

1) Cheetahs run at an average speed of 60 kilometers per hour.
2) A cheetah runs at an average speed of 60 kilometers per hour.
3) The cheetah runs at an average speed of 60 kilometers per hour.

This is actually a difficult question. At first glance, the three sentences are quite similar in meaning, that is, they each describes how fast cheetahs (or a cheetah, or the cheetah) can run. But each sentence carries a slightly different nuance.

Sentence 1 uses the plural form “cheetahs” and it sounds more like a general statement about the animal (the species as a whole).

Sentence 2 uses the indefinite article “a” and it also sounds like a general statement about one animal species in particular. But compared to Sentence 1, I think Sentence 2 gets the reader/listener to pay more attention to the fact that the animal in question is a cheetah because the singular form “cheetah” is chosen over the plural form “cheetahs.” It can either refer to one single cheetah or the entire species of cheetahs. For example, if I tell my friends “A cheetah runs at an average speed of 60 kph,” then I am talking about cheetahs as a whole and not just one single cheetah.

Sentence 3 uses the definite article “the” and this sort of statement is typically used after you’ve already introduced something. For example, if you’ve already mentioned “cheetahs” earlier, then you can say something like Sentence 3. However, in this particular case, this sentence can also be used as an introductory statement to draw the reader/listener’s attention to the animal. It can either refer to “cheetah” the species as a whole, or just one individual cheetah. For example, when the narrator of a wildlife documentary says a sentence like that, they are most likely referring to the species as a whole. But in a different scenario (like maybe in a fable about a cheetah), it can refer to just one cheetah in particular. Again, it really depends on the context.

For instance, the great detective Conan may be telling people a random fun fact about cheetahs: “A cheetah runs at an average speed of 60 kph. Therefore, if the child were riding on the back of the cheetah, he would have been able to arrive at the destination in the given timeframe.” In this case, “a cheetah” refers to cheetahs as a whole and not just one single cheetah while “the cheetah” refers to just one cheetah in particular.

In order of specificity, I would say: Sentence 1 < Sentence 2 < Sentence 3 (with Sentence 3 having the most specificity).

At the end of the day, it’s a matter of diction. It is up to the writer/speaker to determine which version they want to use, depending on the purpose and context.
It’s also just my personal opinion, so another person might have different feelings regarding those three sentences.
But I hope my input is somewhat helpful.