Student or Learner
What does these two sentences mean?
I had to retire on medical grounds. (What does the whole sentence mean?)
Scientists continue to push back the boundaries of knowledge. (What does "push back" mean?
What does the medical mean?
Thanks a lot
As said above, for reasons related to health.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
As I already pointed out in my previos post (#2), "medical" means the doctor told you. If you still have any doubts (which means I did not do well enough):
Medical | Define Medical at Dictionary.com
Hope this (finally) helps