small talk
noun /ˈsmɔːl tɔːk/
  /ˈsmɔːl tɔːk/
[uncountable]- polite conversation about subjects that are ordinary or unimportant, especially at social occasions寒暄;闲谈;聊天 - They made small talk for half an hour.他们闲聊了半个小时。 
- He has no small talk (= is not good at talking politely about unimportant subjects).他不善言谈。 
- She was good at making small talk to put guests at their ease.她善于闲聊,让客人们放松下来。 
 
- They made small talk for half an hour.