North American lobelia having brilliant red flowers.长有鲜艳红花的北美半边莲.North American wild lobelia having small blue flowers and inflated capsules formerly used as an antispasmodic.北美野半边莲,开蓝色小花,以前充入胶囊里作镇痉药....
This is an essential part of research aimed at developing new methods of colorimetric analysis.这是研究发展新的比色分析方法的主要部分.The colorimetric methods involve the bleaching of a preformed color by the fluoride ion.比色法涉及氟离子对预先形成的颜色的...
She has a knack of landing herself right in the soup.她老是让自己的处境很尴尬。"I have a knack for making friends, you know," she added meaningfully.“你知道，我交朋友有一套的，”她故意补充说。It's easy, once you've got the knack.你一旦掌握这个技能就容易了。...