Some individuals might have myoclonic seizures which cause short muscle twitches.

有些个体可能会有肌阵挛性发作，会引起短促的肌肉痉挛。

Today, large plant eating animals like elephants have short jaw muscles, but very strong jaws.

今天，大象等大型植物性动物的下颌肌肉短，但下颚非常强壮。

Not necessarily, due to the way muscles poor, long muscles are not stronger than short muscles.

不一定，由于肌肉的方式较差，长肌肉并不比短肌肉强。