Erect annual or biennial plant grown extensively especially for hay and soil improvement.
直立的一年生或两年生植物，广泛栽培，尤其用于干草和土壤改良。
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。
Biennial a plant that completes its life cycle within two years.
二年生植物：在两个生长季内完成全部生活史的植物。
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