Solid acid catalysts

solid ['sɑlɪd]

adj. 固体的;实心的;结实的，可靠的;可信赖的; n. 固体;立体图形;立方体;

solidus(firm)+id(形容词后缀)→固体的；牢固的；纯粹的

acid ['æsɪd]

adj. 酸味的;尖刻的;酸的;酸性的; n. <化>酸;酸味物质;

acid尖，酸，锐利 →酸；酸的，酸性的

catalysts

n. <化>催化剂( catalyst的复数形式 ); 触媒; 促进因素; 有感染力的人

Have you been to our Tourist Information Center?

你去过我们的旅客服务中心吗？

There is no smoke without fire.

无风不起浪。

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。