lax;slack;demoralized 队伍～be undisciplined and poorly organized/纪律～be lax in discipline/精神～be demoralized;be distraught/士气～ have a deflated(or failing)moral;be demoralized/～斗志sap sb's morale(or fighting will);demoralize/～团结undermine unity /～战斗力dissipate the fighting strength