Lignin is a kind of important macromolecular organic material and only inferior to cellulose inside plant, with a content of 15%-30%.

木质素是植物体中仅次于纤维素的一种重要大分子有机物质，在植物体中含量为15% - 30%。

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Members of an environmental group are staging a protest inside a chemical plant.

一个环保团体的成员们正在一家化工厂内进行抗议。

《柯林斯英汉双解大词典》

The seed has an outer coating that surrounds the genetic material of the new plant, and inside this covering is a concentrated supply of nutrients.

种子有一层外壳，包裹着新植物的遗传物质，外壳内部是集中的营养供应。

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If you plant inside, fill a seven and one-half centimeter pot with soil.

VOA: special.2009.04.21

If you plant chili peppers inside, fill an eight-centimeter pot with soil.

VOA: special.2011.04.26

But if conditions were bad for local people, spare a thought for the workers inside the plant.

BBC: How Tepco glossed over Fukushima's vulnerability

Although currently there are several robots inside the plant, they have not been designed to repair a nuclear reactor.

BBC: Robot 'race' to fix damaged Fukushima nuclear plant

Each worker could spend only a couple of minutes inside the plant before absorbing the maximum radiation and still remain healthy.

CNN: 'We're Scared for Our Baby'