In case of a backward jump, activities may be executed multiple times which also may have effects on the process.
对于向后跳转，可能多次执行活动，这也可能对进程有影响。
You can use a similar technique to develop empathy, by working backward from the observable effects of emotion to the emotion itself.
你能用一个类似的技巧来建立移情：通过从可观察感情产生效果反推至感情本身。
The results show that the role of backward linkages of tourism in Yunnan Province are stronger than the forward linkage effects, and the internal correlation is not obvious;
研究结果表明，云南省旅游业后向关联作用明显强于前向关联作用，且内部关联作用不明显；
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