名词 crossbreeding:

1. (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids

2. reproduction by parents of different races (especially by white and non-white persons)

动词 crossbreed:

1. breed animals or plants using parents of different races and varieties

crossv.穿过；交叉；杂交；反对；勾掉；碰见；阻挠n.十字架；十字形；杂交动植物；苦难adj.交叉的；相反的；生气的；杂交的crossbolt双向锁簧,左右交叉螺栓

1. Research progress on cross breeding of Chinese fir was summarized in this paper and the primary insufficiency was analyzed.
   摘要概述了我国杉木杂交育种研究进展，分析了杉木杂交育种存在的主要问题及其对策。
2. The index of drought resistance lies in yield increase and drought resistance.The hybrid breeding is the main measure for mungbean breeding.
   抗旱指数是抗旱性和丰产性的有机结合，杂交育种是提高丰产性的关键。