You can see for yourselves the damaged condition and the reason why they are unassailable.
你们可以亲眼看到完好无损情况以及货物无法销售的原因。
I'm very sorry. Usually I'm very careful. I have never lost a book before. It won't happen again.
“很对不起。通常我是非常小心的。我以前从来没有丢过书。这样的事不会再发生了。”