The phrase "are merely able" is correct and usable in written English.
It can be used to indicate a limited capability or ability to do something, often implying that the ability is not substantial or significant.
Example: "They are merely able to complete the task with minimal effort, which does not meet our expectations."
Alternatives: "are only capable" or "can just manage".
However, such method is merely able to deal with the training data, but has no means to handle new samples.
When asked about the difference between the two surveys, an ONS spokesman was merely able to say that ASHE was a bigger survey, although a little more historic.
RBM network of each layer is merely able to ensure that weights in its own layer to feature vectors of this layer instead of feature vectors of the whole DBN to be optimized.
However, activation of TNFR1 does not seem to have antithrombotic activity itself but is merely able to attenuate the prothrombotic effects mediated by activation of TNFR2; indeed, TNFR2 knockout mice do not show a significantly longer vessel occlusion time than mice either not pretreated with TNFα or lacking both TNFR subtypes.
In so speaking, he is not just saying in a colorful way that perhaps the final cause does not exist, but rather that it is perhaps a mere fictum, that possibly all of our appeals to final causation are merely convenient fictions, able in principle to be replaced by appeals to other kinds of cause, those with real being, like efficient causes.
If we, who are merely human, are able to give anonymous gifts, how much more is Jesus?
One might object to these claims by holding that a sufficient amount of goods that are "merely good enough" should be able to outweigh a small number of truly excellent goods.
In an nutshell, Young's claim is that all things considered, the kind of statement that conceptual artworks and their ilk are really able to make are merely truisms.
The person(s) will not be able to understand you are merely being awkward.
