In this simple example, there are multiple items dependent on that Step 3; therefore, we have a real bottleneck not only in the resource but in the architecture.

在这个简单的例子中，有多个小项目取决于步骤3；因此，我们不仅在资源上有一个瓶颈，而且在项目结构上也有一个瓶颈。

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The new system is faster and more efficient, but having humans pick the items off the mobile shelves by hand is still an expensive, tedious task that's an ecommerce bottleneck.

新系统更快，更高效，但有人类摘掉移动货架上的物品由专人仍然是一个昂贵，繁琐的任务，这是一个电子商务的瓶颈。

youdao

The new system is faster and more efficient, but having humans pick the items off the mobile shelves by hand is still an expensive, tedious task that's an ecommerce bottleneck.

新系统更快，更高效，但有人类摘掉移动货架上的物品由专人仍然是一个昂贵，繁琐的任务，这是一个电子商务的瓶颈。

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