在网络计划问题中，一项大的工程由许多工序合成。

In the PERT network, a project is composed of many tasks.

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基因工程师们也许也能合成出类猪蚕宝宝DNA混合体。

And genetic engineers may yet manage some kind of porcine-silkworm DNA mix.

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基因工程师们也许也能合成出类猪蚕宝宝DNA混合体。

And genetic engineers may yet manage some kind of porcine-silkworm DNA mix.

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