乙炔黑

Acetylene black A special type of carbon black formed by an exothermic decomposition of acetylene.

乙炔黑：乙炔热分解时形成的一种特殊碳黑。和其它类型碳黑相比，它具有高度团聚和结晶趋势。

Eucalyptus fast forests are not fit to plant in dry area where annual rainfall is less than 1000mm in Hainan Island based on our analysis.

研究结果还表明，在海南干旱地区降雨量小于1000 mm地区不宜发展速生桉树林。

Beginning in the week leading up to the winter solstice and continuing for a full month, Saturnalia was a hedonistic time, when food and drink were plentiful and the normal Roman social order was turned upside down.

开始于冬至的前一周，持续整一个月。农神节是一个快乐的节日，此时食物和饮料丰富，并且正规的罗马社会秩序被完全颠倒。