Our results should be a good approximation to the true state of affairs.

我们的结果应该和实际情况相当接近。

《牛津词典》

The recently proposed "analytic approximation solution" is proved to be a good approximation to the corresponding analytic solution under some conditions.

从精确解出发，推导出最近文献中提出的“解析近似解”，并指出该近似解的适用条件。

youdao

The ideal gas law may turn out to be a very good approximation.

理想气体定律结果，就是一个很好的近似。

youdao

It's always a good first approximation, because you need to start somewhere in terms of drawing Lewis structures, but then if you go and figure out the formal charge and you just have lots of charge separation or very high charges, like a plus 2 and a minus 2 and a minus 1 all different places in the atom, what it should tell you is maybe there's a better structure.

它总是一个好的第一近似，因为在画路易斯结构的时候,你总需要一个起点，但是如果你在算出形式电荷之后,发现有很多电荷分开了,或者说有很高的电荷，比如有一个正二，一个负二，还有一个负一1,在原子的各个地方，这应该就是在告诉你,或许还有一个更好的路易斯结构。

麻省理工公开课 - 化学原理课程节选