The phrase "and cannot be properly" is correct and usable in written English.
It can be used when discussing something that is not being done in an appropriate or acceptable manner.
Example: "The task was rushed and cannot be properly completed without further resources."
Alternatives: "and cannot be adequately" or "and cannot be effectively".
To put a message out that is then withdrawn, but as it's already in the public realm – on social media, and perhaps most crucially at the Stammtisch (the German term for a regulars' reserved table in the pub) – it usefully sticks and cannot be properly recalled?
On his view, the key to understanding different laws and social systems is to recognize that they should be adapted to a variety of different factors, and cannot be properly understood unless one considers them in this light.
As we will see, while some of these ideas fall under the two rival views on the nature and origin of life (metabolism versus genetic information) and cannot be properly tested, others can be tested by using appropriate molecular phylogenetic analyses and, in most cases, refuted (López-García and Moreira 2009; Moreira 2000; Moreira and López-García 2009; Williams et al. 2011).
At present, such a preference is not well understood and cannot be properly measured.
There are, however, datasets of recent experimental data which are truly 3D and cannot be properly transformed and analyzed in 2D.
In other cases information related to hip fracture may not have been recorded in an effort to protect the reputation of physicians, other healthcare workers or the hospital center, or simply because the description of the complication is not very specific and cannot be properly interpreted.
Multicellular organisms and tissue cannot be properly vitrified and thinned using this technique because they are considerably thicker.
This class of drugs retains the potential for severe and possibly lethal adverse events, whose diagnosis and treatment cannot be properly handled by untrained physicians who do not work in a multidisciplinary environment.
Without good drainage, water and air cannot be properly absorbed by plant roots.
Paleontology, a joint science of biology and geology, cannot be properly understood without evolution, nor can pure geology, or carbon 14 dating, a technique used by geology, anthropology and archaeology.
In these conditions, state observation (and control) cannot be properly performed without accounting for the nonlinear nature of the motor magnetic circuit.
