swing/sw/ v 摆动 n 秋千，摆动

这个词常见，来自于wing。

wing/w/ n 翅膀 v 飞行

而翅膀，是依靠wind风飞行的，所以wind与wing同源。

wind/wnd , wand/ n 风

sway/swe/ n/v 摆动

sway也是摇摆的意思，与swing有什么区别呢？

swing多用于快速、有力的往复运动，更加具体；

She swung/sw/ her arm and hit the ball.她挥动手臂急求。体味力量感！

His arms swung as he walked.边走边摆手臂。往复

sway与swing相反，是比较轻容的摆动，也更加抽象化。

She was swayed by his persuasive arguments 思想摇摆了！

His speech swayed the audience’s opinion 感染了观众