approximation

1. N-COUNT An approximation is a fact, object, or description which is similar to something else, but which is not exactly the same. 近似物

That is a fair approximation of the way in which the next boss is being chosen. 那是一個挑選下任老板的大體近似方式。

2. N-COUNT 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

Clearly that's an approximation, but my guess is there'll be a reasonable balance. 顯然那是一個近似值，但是我的猜測是會有不少余額。

As we know, 365.25 is only an approximation. 如我們所知，365.25只是一個近似值。