Definition: to move smoothly backwards and forwards, or to make something do this Level: B2
那位老人在公园里散步时，来回摆动着他的手杖。
The old man ___swung his walking stick as he strolled through the park.
灯笼在晚风中轻轻地来回摆动。
The lantern was ___swinging gently in the evening breeze.
孩子们喜欢在游乐场的秋千上荡来荡去。
The children love to ___swing on the playground swings.
