ph.

1. Don't fall behind with your rent.
不要拖欠房租。

1. 落在...后面,跟不上：fall back 后退,退却 | fall behind 落在...后面,跟不上 | fall for 爱上,迷恋;受骗

2. 落后,落在...的后面：dry up (使)干透,(使)干涸;(使)枯竭 | fall behind 落后,落在...的后面[/Post] | fall through 落空,成为泡影

3. 落后,掉队：未能... fail to do sth. | 落后,掉队 fall behind | 对...而熟悉 be familiar with sth.

verb

1. retreat

Synonym: fall backlosedrop offrecede

2. hang (back) or fall (behind) in movement, progress, development, etc.

Synonym: lagdawdlefall back