to and fro
1
来回地, 往复地
with a repeated backward and forward movement
- The pendulum swung to and fro with a steady rhythm.
钟摆以稳定的节奏来回摆动。
- She walked to and fro across the room while thinking.
她一边思考一边在房间里来回走动。
- The boat rocked to and fro on the waves.
船在波浪上来回摇晃。
- Papers flew to and fro in the wind.
纸张在风中来回飞舞。
- Messages went to and fro between the two teams.
消息在两个团队之间来回传递。