“Let them make a call”
果不其然，Make a call有两个意思：
1，打电话 To call someone, as on a phone or via the Internet.
I have to make a call, so I’m going to step outside for a minute.
How do you make a call on Skype? Can you show me?
2，做决定 To make a decision (about something).
I know that neither option is ideal, but you have to make a call soon.
It’s too much pressure being a doctor. If you don’t make the right call about a patient’s course of treatment, they could end up dead!