HSK 7-9
摆动
bǎidòng动
to sway; to swing; to move back and forth; to oscillate
风中树枝不停地摆动。
Fēng zhōng shù zhī bù tíng dì bǎi dòng.
The branches kept swaying in the wind.
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Appears across levels (7-9) in the HSK 3.0 word list.