This is when we create something ex nihilo, from nothing.
这是我们无中生有的时候。
天主教 Catholicism
We say that God creates the world ex nihilo, from nothing.
我们说天主ex nihilo,无中,而生有。
英语百科
Ex nihilo
Ex nihilo is a Latin phrase meaning "out of nothing". It often appears in conjunction with the concept of creation, as in creatio ex nihilo, meaning "creation out of nothing"—chiefly in philosophical or theological contexts, but also occurs in other fields.