1N-COUNT 接近;近似 An approximation is a fact, object, or description which is similar to something else, but which is not exactly the same. 接近;近似 [Also + to]
That is a fair approximation of the way in which the next boss is being chosen. [+ of]
2N-COUNT 近似值;粗略估计 An approximation is a number, calculation, or position that is close to a correct number, time, or position, but is not exact. 近似值;粗略估计
Clearly that's an approximation, but my guess is there'll be a reasonable balance.