They're almost all minor workers. There are a variety of intermediate workers - the soldiers are rather rare.
2
但白虎仅仅是一种罕见的遗传变异，而不是一个不同的品种。
But white tigers are rare genetic mutations, not a different species.
3
这种罕见的杂交从20世纪末由于人工饲养而变得常见。 2001年世界猫协会接受它作为一种新的品种。
The unusual cross became popular among breeders at the end of the 20th century, and in 2001 the International Cat Association accepted it as a new registered breed.
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