intervention 和 interference用法 区别是什么啊?

帮忙分析一句英语
And we've developed this intervention that really helps adults center in on the things that we need and want children to learn
围绕这种介入活动,就可以帮助大人以孩子需要或想学的知识为中心
为什么center in 后面直接接on啊,

英语翻译
This article reports results from an early intervention program aimed at preventing the development of anxiety in preschool children.Children were selected if they exhibited a high number of withdrawn/inhibited behaviors— one of the best identified risk factors for later anxiety disorders—and were randomly allocated to either a 6-session parent-education program or no intervention.The education program was group based and especially brief to allow the potential for public health application.Children whose parents were allocated to the education condition showed a significantly greater decrease in anxiety diagnoses at 12 months relative to those whose parents received no intervention.However,there were no significant effects demonstrated on measures of inhibition/withdrawal.The results demonstrate the value of (even brief) very early intervention for anxiety disorders,although these effects do not appear to be mediated through alterations of temperament.

英语句子翻译+结构分析
The intervention on the old headquarters of the Banco Hispano Americano, one of the engines of the economy in the Spanish post-war period, is based on thinking in urban terms in order to understand the buildings as an extension of the Paseo de Gracia “that” has to permit the community of the public space in its interior.
后半句中的“that”指代的是什么?

They are accustomed with the pains after the intervention but also with its costs.

be treated by be replaced with~intervention~
简单的翻译下就可以了~不要长篇大论~

After 12 weeks of intervention,the PA level was measured using the International Physical Activity
After 12 weeks of intervention,the PA level was measured using the International Physical Activity Questionnaire (IPAQ) and verified a significant increase (p < .05) in the frequency and duration of moderate PA and walking.The frequency of moderate PAs increased 47%,from 3.5 to 5 d/wk,and the duration increased 123%,from 40 to 120 min/d.Walking patterns also showed a change after the intervention:Frequency of walking increased 98% (from 3 to 6 d/wk),and the duration,151% (from 40 to 100 min/d).These results suggest that even people involved in some exercise sessions could increase their PA level by accumulating at least 30
min of other PA every day帮忙翻译下这段，