现有枣树栽培品种性状各有不足，而且退化现象严重。
The character of date tree cultivar at present has different deficiency, and degeneration is serious.
包括能力，形成了合作关系，用人类创造了一个马 的品种性状的选育脾气好，快速学习，并愿意请。
Selective breeding for traits including an ability to form a cooperative relationship with humans created a horse breed that is good-natured, quick to learn, and willing to please.
应用推荐