Be quite sure, don't hesitate.

要非常确定，请不要犹豫。

youdao

If you are dead, we can be quite sure that you have an extremely low quality of life.

（求指点——译者）如果你死了，我们完全可以确定你的生活质量非常低。

youdao

As all animals and plants breathe air, we can be quite sure there is no life on the moon.

动植物都要呼吸空气，所以我们完全可以断言月球上没有生命。

youdao

This is a huge factor, and one that we can be quite sure about.

FORBES: Petroleum Balance

Its main drawback is that investors can never be quite sure what assets they actually own.

ECONOMIST: Shares

Nobody can be quite sure that in a corner, confronting what it believed to be existential peril, Israel will not act alone if necessary.

ECONOMIST: Be very afraid, please