不速之客: casual visitor; chance comer [visitor]; gate-crasher; sb. who calls without an invitation; self-invited [uninvited; unexpected] guest; unwelcome person
闯入: force on entrance (into); burst into [in]; intrude 短语和例子闯入别人的房间 [屋子; 花园; 领土] intrude into other's room [house; garden; territory]; 闯入 (民宅) [法律] force entrance; 闯入会场 intrude oneself into a