Electron density

electron [i'lektrɔn]

n. 电子;

density ['dɛnsəti]

n. 密度;稠密，浓厚;[物]浓度，比重;愚钝;

dens变浓厚+ity表名词 → 比重；浓缩

No smile, no surprise.

不笑 ，就不给你惊喜。

I remember the girl whose father goes there every winter.

我记得那个女孩的父亲每年冬天都去那里。

The mammoth has now been restored in the Palaeontological Museum in Leningrad. Other animals were trapped in tar pits, like the elephants, sabre-toothed cats, and numerous other creatures that are found at Rancho la Brea,which is now just a suburb of Los

这头长毛象已被修复，现存于圣彼得堡古生物学博物馆。有的动物掉进天然沥清坑里被保存下来，如在兰桥。拉。布里 -- 现在是洛杉矶的郊区发现的大象、剑齿虎和许多其他动物。