that's about the size of it
US /ðæts əˈbaʊt ðə saɪz əv ɪt/
UK /ðæts əˈbaʊt ðə saɪz əv ɪt/

1.
差不多就是这样, 情况就是如此
used to confirm that a statement or description is accurate
:
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So, you're saying we need to start over from scratch? Yes, that's about the size of it.
所以,你是说我们得从头开始?是的,差不多就是这样。
•
He's always late and never finishes his work on time. That's about the size of it.
他总是迟到,从不按时完成工作。差不多就是这样。