The phrase 'very time consuming task' is correct and usable in written English.
You can use this phrase to describe a task that will take a long time to complete due to its complexity or other factors. For example, "Organizing all of the paperwork for the project was a very time consuming task."
Edibles are a great way to consume weed, but making hash oil or weed butter can be a very time consuming task.
In a complicated business network finding a supplier can be a very time consuming task.
This is a very useful tool because it assisting people who move at slow paces is a very time consuming task for human employees.
However, the development of custom LIBRAS dictionaries is a very time consuming task.
Alignment of such large volumes of read data onto a reference genome is a very time consuming task.
However, computing distance matrices is a very time consuming task and might thus not be applicable to live applications, for example, that demand real-time algorithms.
Such estimation becomes very important in the assessment of the fatigue resistance of components subjected to very high cycle fatigue, as this might become a very expensive and time consuming task.
However, the design of LSC is a very complex and time consuming task base on traditional methods.
Modeling of bioprocesses for engineering applications is a very difficult and time consuming task, due to their complex nonlinear dynamic behaviour.
Generally, optimization is a very difficult and time consuming task including many conflicting criteria and a wide range of design parameters.
Running is a very simple but time consuming task that allows runners to not only become stronger mentally and physically, but it also gives them time to reflect, thus making them spiritually stronger and more self aware.
