The girl has a good figure but a plain face.

那个女孩子体形很美，但长相一般。

youdao

Would you rather approach someone with a smile or someone with a plain face?

你愿意接近面带微笑的人还是面无表情的人？ 喜欢跟笑脸相迎的人交流呢？

youdao

The lady had a cloak about her face; but having desired a sup of water, while she drank, it fell back, and she saw her very plain.

那位小姐用斗篷遮着脸；可是她想要喝水的时候，斗篷掉在后面，她把她看得清清楚楚。

youdao

His clothes did not fit well. And he had a plain face, one which many thought was ugly.

VOA: special.2009.06.11

Most foreign troops do not leave for another couple of years, but the limitations of the Afghan army to stand alone, and face a determined insurgency, are still plain to see.

BBC: Can the Afghan army take the lead in battle?