A key break came in the late 1970s, when a UCLA team began to publish the results of an influential long-term study called the UCLA Family Project.

一个关键的突破口出现在七十年代晚期，那时候一个加州大学洛杉矶分校小组开始发表一个称之为“加州大学洛杉矶分校家庭计划”的具有影响力的长期研究的结果。

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A key break came in the late 1970s, when a UCLA team began to publish the results of an influential long-term study called the UCLA Family Project.

一个关键的突破口出现在七十年代晚期，那时候一个加州大学洛杉矶分校小组开始发表一个称之为“加州大学洛杉矶分校家庭计划”的具有影响力的长期研究的结果。

youdao