问题描述：
All parents take pride in their kids especially when they are seen to be improving.
"they are seen to be improving"这句怎么理解?我知道意思,就是没办法理解它的语法——为什么可以这么说?
"they are seen to be improving"这句怎么理解?我知道意思,就是没办法理解它的语法——为什么可以这么说?
问题解答：
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