It's just very time consuming to get such a large quantity of data.

要收集这么多的数据就是非常耗时。

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Currently, most ingredients must be changed to a paste before a printer can use them, and the printing process is quite time-consuming because ingredients interact with each other in very complex ways.

目前，大多数原材料在放入食物打印机之前需要弄成糊状，由于各食材会以一种复杂的方式相互作用，整个打印过程也很耗时。

youdao

You could go to each machine and manually check all of these issues, but when the machines are dispersed over a wide area, this can be a very time-consuming process.

您可以走到每台机器前手工检查核对所有这些问题，但是当机器分散在一个广阔的区域内，这样做会是一个非常费时的过程。

youdao

All in all, a very time consuming ordeal that one would tend to put off because of just how much time it ate away at.

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In addition to being a very time-consuming process, the confirmation would go before that committee's chairman, U.S. Sen.

CNN: Microsoft case in political limbo as votes counted

The major problem, I think, is that this would be a very large piece of time consuming litigation and one never wants to advise individuals to go into litigation without being fully aware of what the possible consequences would be, and you may well find that you could be at risk for legal costs unless you find a financial backer.

BBC