| 字词 | 往复 |
| 释义 | 往复 动move back and forth; reciprocate; move to and fro 往复运动reciprocating motion; alternating motion; backward and forward movement 循环往复，以至无穷repeat itself in endless cycles; be forever in a loop 动contact; exchange visits 书信往复exchange letters 往复泵 名reciprocating pump |
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