Silicon is the principal ingredient in electronics, and it's inflexible and brittle.

硅是电子产品的主要组成部分，但是它不具有可塑性而且易碎。

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This product is a nutrimental food, used Seal Oil as its principal ingredient and prepared by scientific processing technics in advance.

本品是以海豹油为主要原料，经过先进的科学加工工艺精制而成的营养食品。

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This product is a nutrimental food, used Colostrum as its principal ingredient and prepared by scientific processing technics in advance.

本品是以牛初乳粉为主要原料，经过先进的科学加工工艺精制而成的营养食品。

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Rosewood Little Dix Bay in Virgin Gorda, meanwhile, now offers a Natural Neem Leaf Facial, with its principal ingredient picked daily on the island.

FORBES: Uncommon "Sense"

But the agency also noted that allergic reactions occur about once in 300 times for soybeans, the principal ingredient in many meat substitutes.

FORBES: Food fight

But one reason radium is dangerous is that, as a glance at the periodic table will show, it is chemically similar to calcium, a principal ingredient of bone.

ECONOMIST: Treating prostate cancer