点头振动 diǎntouzhèndòng nodding Origin Definitions Defs Strokes Stroke Words Sentences Sents 点头 點頭 diǎntóu verb + noun to nod To move one's head up and down to express agreement, approval, understanding, or to greet someone.振动 振動 zhèndòng verb to vibrate to vibrate; to shake or tremble; (physics) to oscillate or move periodically around a central position