复数： broadleaf broadleaves

Annual broadleaf and grass weeds are major problems .

主要杂草是一年生阔叶杂草和禾本科杂草。

Study on chemical weeding techniques of broadleaf .

阔叶树苗圃化学除草技术的研究。

Analysis on chromosome set type of broadleaf vetch .

山野豌豆的染色体组型分析.

European markets : merchants in march improve broadleaf pulp prices .

欧洲市场：3月商人改善阔叶纸浆价格。

Changbai mountain mixed korean pine and broadleaf forest .

长白山，混合了韩国松和阔叶松的森林。