Solid Species: candy, biscuit, peanut, green bean, pistachio, cooked food, pickles etc.

固体类：糖果、饼干、花生、青豆、开心果、酱菜、膨化食品等。

youdao

So we'll have an iron oxide species. It's a solid.

那么我们有氧化铁，它是固体。

youdao

Fig. 4 Responds of tree species richness to environmental factors. The solid line shows the estimations of tree richness, and the dashed lines indicate 95% confidence interval.

图4树种丰富度对环境因子的响应。图中实线表示树种丰富度的期望值，虚线表示95%置信区间。

youdao

So we'll have an iron oxide species. It's a solid.

那么我们有氧化铁，它是固体。

麻省理工公开课 - 热力学与动力学课程节选