Incalculable means too big — or too messy — to put a real number on. Writers use it for damage, loss, value, and importance: incalculable harm, an incalculable debt of thanks. It is a formal, slightly dramatic word; in conversation people more often say you cannot even measure it, or simply huge. Though actually, it is also used when something cannot be calculated because it is too uncertain, not only because it is too large: an incalculable risk. Both uses share the same idea: a tidy number would be a pretence.

無法估量的；難以計算的