B2 adverb /ˈmiːn.taɪm/
Meantime
その間に
Meaning
during the time between two events; in the period of time between now and when something else happens
Example
The food will be ready in an hour; in the meantime, we can watch TV.
食べ物は1時間後に準備が整います。その間にテレビを見ていましょう。