Ozone is produced by the reaction between oxygen and ultra-violet light.臭氧由氧气和紫外线发生反应而产生。When it comes to expressing himself he is no shrinking violet.他在表达自己的想法时毫不羞怯。Violet appended a note at the end of the letter.维奥莱特在信...
California dogtooth violet with creamy white flowers sometimes yellow - tinged.加利福尼亚州的一种赤莲,花乳白色,有时淡黄色.If they do break, apply some gentian violet solution.如果水疱破了, 上点龙胆紫药水.Javanese foliage plant grown for their handsome v...