polish

vt.

1. 磨光，擦亮[（+up）]
   He polished his spectacles with a handkerchief before answering.

   回答之前，他用手帕擦拭了一下眼镜。

2. 使优美，使精炼；润饰[（+up）]
   The speaker spent several days polishing her lecture.

   演讲者花了几天时间润饰她的演讲稿。

vi.

1. 发亮；变光滑；变优美