Finally, cycloalkynes do exist, but they are crazy hard to form because the triple bond is linear, so it hates bending into rings, and that is why the simplest cycloalkyne has eight carbons.

最后，环炔烃确实存在， 但它们很难形成， 因为三键是线性的，所以它讨厌弯曲成环， 这就是为什么最简单的环炔烃有八个碳。