exfiltrate
/eksˈfɪltreɪt/verb
with obj.
- withdraw (troops or spies) surreptitiously, especially from a dangerous position使（部队, 间谍）偷偷撤出危险阵地（或岗位）。
派生词
exfiltration
noun词源
late 20th cent.: back-formation from exfiltration, perhaps suggested by the pair infiltration, infiltrate.