fall to
US /fɔːl tə/
UK /fɔːl tə/

1.
2.
落到, 成为...的责任
to become the responsibility of someone
:
•
The task will fall to the newest member of the team.
这项任务将落到团队最新成员的头上。
•
It often falls to the eldest child to care for aging parents.
照顾年迈的父母通常落到长子身上。