That song has stuck in my head for years.那首歌多年来一直铭记在我心中。The things that stuck out were his cockiness and his four-letter words.与众不同之处在于他的骄傲自大和满嘴脏话。He folded the papers and stuck them in his desk drawer.他将文件叠起来，塞进自己的书桌抽屉里...
Carotenes are insoluble in water and soluble in oils and fats.胡萝卜素不溶于水，但可溶于油类和脂肪。There are over 600 known carotenoids ; they are split into two classes, xanthophylls and carotenes.有超过600种已知的类胡萝卜素,可以分为两类:叶黄素和胡萝卜素....