1. cross,混合物,杂交,杂种。
eg：A Barbary duck is a cross between a wild duck and an ordinary duck.
巴巴里鸭系由野鸭与普通鸭杂交而成。
2. communicate,沟通，交际,交往;和某人沟通就是communicate with someone。
eg：We learn a language in order to communicate.
我们学习语言是为了交流思想。
3. variation,差别,差异。
eg：The light intensity had characteristics of temporal and spatial variation.
光照强度在杏树行间的分布具有时空变化特征。 |