"he traveled back and forth between Los Angeles and New York"
"the treetops whipped to and fro in a frightening manner"
"the old man just sat on the porch and rocked back and forth all day"
1. 来回地,反复地:at times 有时,间或 |backandforth 来回地,反复地 |back of 在......后面
2.
2. (前后)来回地,往返:attend to 专心;照顾,护理 |backandforth (前后)来回地,往返 |back away 逐渐后退
3. back and forth在线翻译
3. (前后)来回地,反复地:at the same time同时;然而,不过 | at the sight of一看见......就 |backandforth(前后)来回地,反复地
名词::back-and-forth