He gave the boy's ear a painful tweak. 他用力拧了一下那男孩的耳朵.
Publication of the study will do more than tweak public awareness; it will enlighten doctors who have urged cousin couples not to have children. 此项研究的公开发表将不仅会扭转公众对这个问题的认识,它还将促使那些力劝近亲夫妻不要生育的医生摆脱偏见。