Got it, thank you!!
I came across another question while dealing with the labels in NiMARE. Those labels seem to be different from the actual labels in Neurosynth. As an example, I attach a word cloud of the labels of all studies with activation in middle frontal gyrus: 
These labels are derived by removing the “Neurosynth_TFIDF__” part of the original NiMARE labels. As you can see, many of them do not make sense, e.g., “ffec”, “al”, “p”. It seems that some characters in the label get lost when they are imported into NiMARE. Is there any way to solve this problem, and get the actual label of these studies?