He had to be certain. There could be no room for doubt.

他必须确定无误。不能有任何的犹疑。

《牛津词典》

Hook's words had left no room for doubt.

胡克的话没有留下任何怀疑的余地。

youdao

There is no room for doubt.

没有怀疑的余地。

youdao

The fact that both those triumphs were part of domestic league doubles leaves no room for doubt about the scale of Richards' achievements.

BBC: SPORT | Rugby Union | English | A Leicester legend

That revelation, which has been submitted for publication to Physical Review Letters, leaves no room for doubt: B-bars turn into B-minuses far faster than B-minuses turn into B-bars.

ECONOMIST: The arrow of time

Steltzner wanted no ambiguity now, no room for doubt.

NEWYORKER: The Martian Chroniclers