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....
He called out to them to watch out for the unexploded mine.他冲他们大喊，叫他们小心哑雷。With cargo projectile by the world , serious problem of unexploded ordnance arisen.子母弹药的应用与发展带来了严重的未爆弹药问题....
He treated them seriously and, on occasion, entertained them hilariously.他对待他们严肃认真，偶尔又逗得他们捧腹不已。Safire writes hilariously of being banished from presidential favor.萨菲尔笔锋幽默，描写了自己没能博取总统好感的事。She found it hilariously funny.她觉...