Kao said she cautions against forming any generalizations based on any one of the studies, noting that more background characteristics of the students need to be studied and explained.

Kao 说她曾警告，不要根据任何一项研究得出任何一般化的结论，还提出需要进一步研究和解释这些学生的背景特征。

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"Let people earn a real wage," she cautions.

“让人们真正有的赚，”她警告说。

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But even then, she cautions that you're walking a precarious line.

即使如此，她也顾虑你走在一条岌岌可危的路上。

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But she cautions that it must be implemented in a manner in which nobody is left out.

VOA: standard.2009.09.24

It needs to be handled sensitively in order to avoid someone having their character tarnished unfairly, she cautions.

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"Don't walk away from this research thinking, I should stay away from cooking or cleaning because I'll benefit from it, " she cautions.

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Ms. Netrebko's friendly manner and years in the spotlight suggest an artist at consummate ease on the stage, but don't let appearances fool you, she cautions.

WSJ: Anna Netrebko | So Long, Ing��nues | Cultural Conversation by David Mermelstein