pewien przekonany in inglese:

It's certain.

I wish I could care more about my grades but it seems that, at a certain point of my life, I decided they wouldn't be so important anymore.

When I reached the hall right away the person in charge unrelentingly said things like "This painting is certain to increase in value in the future," and I went and signed the contract.

Knowing very well that his wife wanted to go to a movie, the husband, who was a dog in the manger, cooked up a scheme whereby they had to stay at home waiting for a certain visitor who was not expected to come.

Not all are called to be artists in the specific sense of the term. Yet, as Genesis has it, all men and women are entrusted with the task of crafting their own life: in a certain sense, they are to make of it a work of art, a masterpiece.

In linguistics, the Sapir-Whorf Hypothesis states that there are certain thoughts of an individual in one language that cannot be understood by those who live in another language.

The other day, a water quality inspection was carried out at our house. We had it done by a certain famous company's Environment Analysis Center or some such name.

Age may have one side, but assuredly Youth has the other. There is nothing more certain than that both are right, except perhaps that both are wrong.

Outside the mainstream of orthodox Judaism, the apocalyptic books were more successful with certain movements.

When we watch a movie, play a video game, or read a book, we become emotionally attached to certain characters and gradually become like them.

A budget is a plan or schedule adjusting expenses during a certain period to the estimated or fixed income for that period.

So that Michelangelo might paint certain figures on the ceiling of the Sistine Chapel, so that Shakespeare might write certain speeches and Keats his poems, it seemed to me worthwhile that countless millions should have lived and suffered and died.

In England in the Middle Ages, whole towns played football on certain holidays, sometimes with as many as 500 players at one time.

Suffering from terminal cancer, he was thrown out of a certain veteran hospital in New York three times because he adamantly rejected blood transfusions.

Among human beings, the subjection of women is much more complete at a certain level of civilisation than it is among savages. And the subjection is always reinforced by morality.