The phrase "entails effort" is grammatically correct and can be used in written English.
You can use it when describing a task, action, or situation that requires a certain amount of effort or work to achieve or accomplish. Example: "Learning a new language entails effort and dedication, but the end result is worth it."
In fluvial geomorphology, it entails efforts to relate local landforms to their landscape context, generating place-based understandings that can be related to theoretical principles about diversity of forms, formative processes, patterns/configurations of features, and evolutionary adjustments.
These can entail efforts to ban particular faiths, prohibit conversion, restrict preaching or give special treatment to one or more religious groups.
The effort to return to Earth entails the effort to reënter its gravitational field.
Now, with six months left in his first term, Sarkozy is coming up for reëlection as an underdog, which entails an effort that his advisers have described as "represidentialization".
However, turning an exploratory prototype into a "proper" tool for end-users often entails great effort.
However, this process entails much effort because of the deficiencies in technology of the historical recording systems.
Simple innovations can be often done by employees involved, whereas attaining more complex innovations usually entails joint effort, i.e., teamwork based upon a range of precise knowledge, competence, and work roles (Janssen 2000).
To supply the operational sensing power and the power for wireless communication, any wireless sensor module needs a battery attached, and this entails extra effort for a regular battery change.
Moore et al. (2014) add that the combining of disciplines is "based on connections between the subjects and real world problems," and more specifically entails, "an effort by educators to participate in engineering design as a means to develop technologies that require meaningful learning and an application of mathematics and/or science" (p. 38).
To illustrate this, think of planning some recreational activity with your partner: it entails low effort and may certainly be enjoyable rather than distressing.
A truly embodied approach moves the clinician beyond an understanding of seeing as a physical act of vision, towards S eeing (with a capital S) that entails an effort to understand patients' unique qualities.
