The phrase "entails difficulties" is correct and usable in written English.
It is used to convey that something brings with it a certain degree of difficulty. For example, "Making significant changes to the existing system entails difficulties."
This disorder is often associated with marked clumsiness, which entails difficulties walking, crawling and running [ 51].
For children, this entails difficulties at school and in social interactions [ 18, 21, 52, 53].
The other exposure, distance to major road, represents exposure to traffic but may also express socioeconomic status (Nicolai et al. 2003; Vineis et al. 2007), which entails difficulties in separating these effects (Nicolai et al. 2003).
This entails difficulty sleeping during the day, and difficulty staying alert while working at night.
This last claim entailed difficulties of its own, such as how atoms ever overtake each other, if they are moving in the same direction.
The first step in the adaptation study showed that there are indeed similarities between Germany and Switzerland but that an adaptation may also entail difficulties as a result of different commercial work conditions (e.g., job definitions, commercial activities and different branches) and cultural characteristics (e.g., language, interpersonal behavior, and company structures).
Managing daily life could entail difficulties in peeling potatoes or handling cutlery in the kitchen.
With the relatively primitive apparatus available and limited power, the processing of the whole root would entail difficulties in rasping and in removing dirt, crude fibre and cork particles, whereas comparatively little extra starch would be gained.
This entails several difficulties during early design process and collides with general design concepts as good balancing, order and symmetry.
However, performance evaluation of BMP entails many difficulties due to the many block types and many differences between actual and planned operations.
As a final comment, it should be pointed out that explaining the consequences of dynamic effects on static maps entails significant difficulties owing to the incorporation of the temporal component.
