How do I INSERT multiple rows using query_secure method?

I can do single row insert easily:
e.g.
$params = array(1, "John Smith", "Male");
$result = $db->query_secure("INSERT INTO EMPLOYEES (EMPID,NAME,SEX) VALUES(?,?,?);", $params, false, true);

But I want to insert TWO records at the same time.
e.g.
$params = array(1, "John Smith", "Male",2, Mary Black, "Female");
$result = $db->query_secure("INSERT INTO EMPLOYEES (EMPID,NAME,SEX) VALUES(?,?,?);", $params, false, true);

How can this be done - either with named placeholder or unnamed placeholder please?