He rubbed and rubbed but couldn 't seem to get clean .
他擦了又擦，可就是擦不干净。
He sat back removed his glasses rubbed his eyes with the backs of his hands .
他靠回椅背上，摘下眼镜，用手背擦了擦眼睛。
The volunteers then had a cream rubbed into the skin of one leg to induce pain , which was either a dummy cream or a cream that contained chilli - which caused a burning and painful sensation .
