vt.

1. （动物）产（子），孵（卵）
2. 使繁殖，饲养
   They used to breed fish in the reservoir.

   他们过去一直在水库养鱼。

3. 养育；培育；教养[H][O2]
   They were bred up as acrobats.

   他们从小被作为杂技艺人培养。

4. 引起，惹起；产生
   Dirt breeds disease.

   污秽惹起疾病。

5. 【核】增殖，再生

vi.

1. （动物）生产；孕育
   Rabbits breed quickly.

   兔子繁殖快。

2. 繁殖，育种
3. 滋生，产生

n.[C]

1. （尤指经人工培育的动植物）品种[（+of）][G]
   We have the finest breed of sheep.

   我们拥有最优品种的羊。

2. 种类，类型

v.

1. (of animals) mate and then produce offspring.
   ▸cause (an animal) to produce offspring.
   ▸develop (a variety of plant or animal).
2. bring up to behave in a particular way.
3. produce or lead to:
   success had bred a certain arrogance.
4. Physics  create (fissile material) by nuclear reaction.

n.

1. a distinctive stock of animals or plants within a species, typically one deliberately developed.
2. a sort or kind.