例句與造句

1. It's probably fairly brutal to sit in _ most of these chairs look that way _ and since it is largely held together with nails, I suspect a lot of sitting in it is going to turn it into firewood . ( I'm sorry, but I just don't believe nails can hold things together if they're subject to racking stresses .)
2. It's difficult to find racking stress in a sentence. 用racking stress造句挺難的