光在光纤中损耗不是光纤制造技艺的责任，而是光纤的成分——玻璃纯度不够。
It was not the manufacturing of the fiber that was at fault, but rather that the ingredient for the fiber - the glass - was not pure enough.
很多化妆品都声称有防晒成分阻挡有害射线，但实际上它们远远不够用来防止皮肤损伤。
Lots of makeup claims to have sunscreens that block harmful rays, but it's probably not enough to ward off skin damage.
盐是烹饪中的很主要的调味品成分，很多人开始做菜的时候放的盐都不够。
It's the main seasoning agent in the culinary arts and something many beginning cooks don't use enough of.
应用推荐