Now that Hiromi and her friends have established a bicycle club, they need to find members and a faculty adviser. Shiki-sensei agrees to be their adviser, but the swimming club begins aggressively recruiting Higa Natsumi from their club. It comes down to a bicycle race for Natsumi.
In other words, she's not 
getting the most out of them.
.بعبارات أخرى، إنّها لا تستفيد من عضلاتها بشكل أفضل
Kurz gesagt:
Sie kann nicht alles rausholen.
Es decir, que no puede
aprovecharlos correctamente.
Es decir, que no puede
aprovecharlos correctamente.
Et donc, on ne peut pas
déployer assez de force.
In altre parole, non li stai usando al massimo.
Ou seja, não vai conseguir usar 
sua força de forma satisfatória.