plain-Jane
adjective/ˌpleɪn ˈdʒeɪn/
/ˌpleɪn ˈdʒeɪn/
[only before noun] (North American English)- very simple and not particularly attractive
简·简：非常简单，但并不特别有吸引力 - They bought an inexpensive plain-Jane house and turned it into a gorgeous home.
他们买了一栋廉价的简陋房子，并将其改造成一座华丽的家。
- They bought an inexpensive plain-Jane house and turned it into a gorgeous home.