Don't fall behind with your gas bill.不要拖欠煤气费.Don't fall behind with the rent, or you'll be evicted.不要逾期不缴房租, 否则会被逐出.Don't fall behind with your rent.不要拖欠房租....

拖欠未付（租金等）...

fall behind with的音标：fall behind with的英式发音音标为：[fɔ:l bi'haind wið]fall behind with的美式发音音标为：[fɔl bɪ'haɪnd wɪð]...