使用上面的示例，如果想只使用羊驼地图生成输出，会发生什么情况呢？
Working with the sample above, what happens when you want to produce output using only the alpaca map?
环境保护主义者已经使用克隆来帮助保护濒危物种，例如穆福隆羊。
Conservationists have used cloning to help protect endangered species such as the mouflon sheep.
总共使用了277个卵细胞，却只有一只多利羊存活。
In all, 277 eggs were used and only one lamb - Dolly - survived.
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