On special submodule of modules

‎Let $R$ be a domain with quotiont field $K$‎, ‎and‎ ‎let $N$ be a submodule of an $R$-module $M$‎. ‎We say that $N$ is‎ ‎powerful (strongly primary) if $x,y\in K$ and‎ ‎$xyM\subseteq N$‎, ‎ then $x\in R$ or $y\in R$ ($xM\subseteq N$‎ ‎or $y^nM\subseteq N$ for some $n\geq1$)‎. ‎We show that a submodule‎ ‎with either of these properties is comparable to every prime‎ ‎submodule of $M$‎, ‎also we show that an $R$-module $M$ admits a‎ ‎powerful submodule if and only if it admits a strongly primary‎ ‎submodule‎. ‎Finally we study finitely generated torsion free‎ ‎modules over domain each of whose prime submodules are strongly‎ ‎primary‎.