他对警察的陈述中有半个小时的事情未交代清楚。

In the story he gave the police, half an hour was left unaccounted for.

《牛津词典》

这不能怪他，只怪我没有交代清楚。

This is not his fault. I am to blame for not having made the whole thing clear to him.

《新英汉大辞典》

在许多细节上他未交代清楚。

He was vague on many of the details.

youdao