maintaincontact;保持接触
givesb.moreexposuretothelanguageenvironment;接触语言环境
engagetheenemy;与敌人接触
disengagethearmedforcesofthetwosides双方武装力量脱离接触
loosecontact;poorcontact;badcontact;接触不良
comeintocontactwithmanynewideas接触许多新思想