For example, if a plant needs protection against a leaf-feeding pest, the protective agent need not also be present in the grain (that's harvested for food).

例如，如果一种作物需要保护免于遭受一种以叶子为食物的害虫的侵害，保护剂不需要在（作为粮食而收割的）作物中出现。

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Biennial yellow-flowered Eurasian plant having aromatic leaves used as carminative or flavoring agent; widely cultivated especially as green manure or cover crop.

两年生欧亚植物，花黄色，其叶芳香，用做祛风剂或调味品；广泛栽培，尤其作绿肥或覆盖作物。

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The experiment provided us with some clues to make Fissistigma oldhamii as a good plant antifungal agent.

抑菌实验旨在为把瓜馥木开发成为新的植物源抑菌剂提供线索。

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The key additives in Organic Choice soil: chicken manure and yucca plant extract, a wetting agent.

FORBES: Magazine Article

In the Aug. 23 memo, the DOE official responsible for supervising engineering at the facility, Gary Brunson, calls for Bechtel to be immediately removed as the design agent for the novel Waste Treatment Plant (WTP), which was supposed to begin operation last year.

FORBES: Bechtel Incompetent To Complete Hanford Nuclear Waste Cleanup: DOE Memo

Given the importance of all kinds of chemicals to industry around the world and the ease with which virtually any fertilizer, pharmaceutical or plastics manufacturing plant can be used, when required, to make a batch of weapons agent, no ban on production can solve or even substantially mitigate the chemical weapons problem.

CENTERFORSECURITYPOLICY: Blowing Smoke About Making Deadly Gas