back·wa·ter
noun/ˈbækwɔːtə(r)/
/ˈbækwɔːtər/
- a part of a river away from the main part, where the water only moves slowly
（河流的）滞水，壅水，回水 - (often disapproving) a place that is away from the places where most things happen, and is therefore not affected by events, progress, new ideas, etc.
与世隔绝的地区；落后地区 - a sleepy/quiet/rural backwater
沉寂的／宁静的／乡下的落后地区 - The region became more and more of an economic backwater.
该地区的经济日益陷入停滞状态。
- a sleepy/quiet/rural backwater