first approximation

基本解釋

That, to a first approximation, is the neo-Darwinian account of how phenotypes evolve.
以上基本就是新達(dá)爾文主義關(guān)于表型進(jìn)化的觀點(diǎn)。
This approach is mathematically a first approximation to messages with a variable size (bear with me, I will keep it short and simple ).
這個(gè)方法在算術(shù)上最接近大小不定的消息（請(qǐng)?jiān)?，我將盡量使它簡(jiǎn)短）。
So the first approximation is, you can realize that the molar volume of the gas is always much bigger than the volume of the solid or the liquid.
第一個(gè)近似是，你會(huì)發(fā)現(xiàn)氣體的摩爾體積,遠(yuǎn)遠(yuǎn)大于固體,和液體的摩爾體積。

While these gas molecules or atoms through first approximation, are like hard spheres.
可以看做剛性小球,每一個(gè)分子會(huì)占據(jù)。
麻省理工公開(kāi)課 - 熱力學(xué)與動(dòng)力學(xué)課程節(jié)選
What we've learned so far is as a first approximation, what we want to do is put the atom with the lowest ionization energy in the middle here.
我們之前所學(xué)的可以作為第一近似，我們要做的是把電離能,最低的原子放在中間。
麻省理工公開(kāi)課 - 化學(xué)原理課程節(jié)選
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.
它總是一個(gè)好的第一近似，因?yàn)樵诋?huà)路易斯結(jié)構(gòu)的時(shí)候,你總需要一個(gè)起點(diǎn)，但是如果你在算出形式電荷之后,發(fā)現(xiàn)有很多電荷分開(kāi)了,或者說(shuō)有很高的電荷，比如有一個(gè)正二，一個(gè)負(fù)二，還有一個(gè)負(fù)一1,在原子的各個(gè)地方，這應(yīng)該就是在告訴你,或許還有一個(gè)更好的路易斯結(jié)構(gòu)。
麻省理工公開(kāi)課 - 化學(xué)原理課程節(jié)選

And there's a debt that goes up so on a first approximation, the tax cut doesn't cut away from that.
NPR: Wall Street Woes: Who Gets A Bailout?