警方在门把手上发现了一个拇指印，这将成为关键证据。

The police found a ___thumb-print on the doorknob, which will serve as crucial evidence.

这位设计师极简而实用的作品中清晰地展现了她独特的个人风格。

The designer's ___thumb-print is clearly visible in her minimalist yet functional creations.