 Our results thus provide strong theoretical support for the optimality and robustness of intermittent\emph{  L\'evy walks under general conditions .
<meaning-changed>  Our results thus provide strong theoretical support for the optimality and robustness of intermittent\emph{  L\'evy walks under general conditions .
 Our results thus provide strong theoretical support for the optimality and robustness of intermittent\emph{ , and are thus expected to impact future experiments on animals performing L\'evy walks under general conditions .