Grandfather has many wrinkles on his face.

祖父的脸上有许多皱纹。

He wrinkled his forehead, confused and worried by the strange event.

他皱起眉头，觉得这件怪事莫名其妙又十分担心。

His face wrinkled when he smiled.

他微笑时脸上出现了皱纹。