strum

v (-mm-) [I, Ipr, Ip, Tn] ~ (on sth) play (a stringed instrument), esp rather unskilfully or monotonously 演奏（弦乐器）（尤指不很熟练或单调乏味）: strumming (away) on my guitar （我）胡乱拨弄著吉他 * strum a tune on the banjo 用班卓琴乱弹一曲.

strong-minded, strong-room, stronghold, strongly, strontium, strontium 90, strop, stroppy, strove, struck, structural, structuralism, structuralist, structurally, structure, strudel, struggle, struggle against, struggle for, struggle to one's feet, strumpet, strung, strung up, strut, strychnine, stub, stubble, stubbly, stubborn, stubbornly, stubbornness, stubby, stucco, stuccoed, stuck, stuck-up, stud, stud-book, student, student sociologist,