tie (something) in with something
phrasal verb with tie verb uk/taɪ/ us/taɪ/ tying | tied
（使）同时发生
to plan an event or activity so that it combines with or happens at the same time as another, or to be planned in this way
We're trying to tie our holiday in with Jaimie's business trip. 我们试图把我们的假期与杰米的出差行程安排在一起。