incursion /ɪnˈkɜːʃn/ DJ /ɪnˈkɜːrʒn/ DJ US /ɪn'kɝʒən/ KK US
noun
a sudden attack on a place by foreign armies, etc. 突然入侵;突然侵犯;袭击 ~ (into sth) formal
the sudden appearance of sth in a particular area of activity that is either not expected or not wanted (意外的)搅扰,介入