hold the fort
US /hoʊld ðə fɔrt/
UK /hoʊld ðə fɔrt/

1.
照看, 代为管理, 坚守岗位
to take care of a place or situation while someone else is away
:
•
I'm going out for a bit, can you hold the fort until I get back?
我出去一下,你能照看这里直到我回来吗?
•
While the manager was on vacation, his assistant had to hold the fort.
经理度假期间,他的助理不得不代为管理。