to attend briefly or informally
短時間または非公式に参加する (tanjikan matawa hikōshiki ni sanka suru)
"I plan to drop in for the group discussion later this evening."
"今晩、グループディスカッションに少し参加する予定です。" (konban, gurūpudisukasshon ni **sukoshi sanka** suru yotei desu)
to isolate yourself from others to calm down
to disconnect a device from a power source
to be more advanced or prepared than others
to end up in a particular situation unexpectedly
to relax by doing something enjoyable
to face difficulties with courage and determination