Perhaps the most fundamental is an abundance of elements that can be easily boiled out of hot rock.

也许最基本的一点就是水星大量拥有从沸腾岩浆中便可轻易获得的元素。

youdao

The rate at which massive stars form drops sharply as you venture outward from the Milky Way’s center, and the abundance of heavy elements falls with them.

你越往星系中心走，大质量恒星形成的难度就上升得越快，重元素的丰度也随之下降。

youdao

Metallicity is a measure of the relative abundance in a star of elements other than hydrogen and helium.

金属丰度是对恒星内除氢和氦之外元素的相对丰度的度量(天文学中比氦重的元素都叫金属。——译者注)。

youdao

He added that the team did find that the presence of lower frequency elements in a song was predictive of whether a species' abundance would be affected by noise.

BBC: Traffic noise driving songbirds to the limit in cities