what is "plus-up"? "he asked for a plus-up of 10 thousand dollars for the program." does “plus-up" means adding another 10 thousand dollars?

the exact meaning of the sentence “The communication systems allow the new system to communicate with satellites, radar ground control stations and more than 40 aircraft.” the last part of the sentence "more than 40 aircraft" means the new system can communicate with over 40 kinds of aircraft? or the new system can simultaneously communicate with over 40 aircraft?

register on the radar screen the concept had not registered on the radar screens of many environmental or civil rights groups. how to translate "register on the radar screen "?

reading comprehension question Because many issues identified at the inaugural summit remain unaddressed,the second summit was convened in Washington,D.C the question is: with respect to getting environmental justice, the second Summit was aimed for___. A. identifying relevant issues B.finding solutions to the problem I chose B, but the answer is A why is it A?

swat flies with a shotgun “swat flies with a shotgun” what is the meaning? if you know some Chinese language, would you please help me translate it into Chinese?

awesome, wonderful, absolutely fantastic they think A is "awesome", B is "wonderful", and C is "absolutely fantastic". I know "awesome","wonderful","absolutely fantastic" are used to describe sth very good or charming. but I cann't see the difference on the levels of them, as I am trying to tranlate them. so which is stronger than which?

hit the ground running what is "hit the ground running"? what does it mean?

We're reducing our presence "We're reducing our presence in this area." does it mean less showing in this area? or how to say exactly in Chinese?

???As you're bouncing around the roads, hitting potholes, something gets knocked lose??? "As you're bouncing around the roads, hitting potholes, something gets knocked lose." what is it's meaning?