Scientists from Korea have turned the main ingredient of calamine lotion into a tiny material that converts sound waves into electricity.(韩国科学家将炉甘石洗液的主要成分转化成一种微细的材料，这种材料能够将声波转化成电能。)
This ingredient is used to balance the PH in products, and can cause allergic reactions, and irritate your eyes, nose and skin.(这种成分被用来平衡产品中的酸碱值，能够引起过敏反应，并刺激你的眼睛、鼻子和皮肤。)
The active ingredient in some of the mouthwashes was simply detergent.(某些漱口剂中的活性成分只是清洁剂而已。)
Palm oil is an ingredient in an estimated third of all products on supermarket shelves, from biscuits and margarine to shampoo and confectionery.(在超市货架上，棕榈油是一种被估计使用率第三的食品配料，从饼干、人造黄油到洗发水到糖果都有它的足迹。)
A new hair-growing drug is being sold for three times the price, per milligram, as the drug's maker charges for another product with the same active ingredient.(一种新的毛发生长药物每毫克的售价是该价格的三倍，就如该药物的制造商对另一种含有同样活性成分的产品的售价一样。)
But it's more than just an ingredient.(但它的意义不仅仅是一种原料。)
Strength of will is the missing ingredient that Obama lacks.(但是，意志的力量是奥巴马所缺少的要素。)
Coconut is a basic ingredient for many curries.(椰子是多种咖喱菜的基本成分。)
