oscillate

v. /ˈɑː.sə.leɪt/ C1

摆动；波动

To move repeatedly back and forth between two positions or values.

仙境例句

As the Gryphon slept, his long tail began to oscillate slowly from side to side.

狮鹫睡着的时候，长尾巴开始慢慢地左右摆动。