vi.[(+on/upon/into)]

1. 侵入；闯入
   Don't intrude in a family dispute.

   不要介入家庭争端。

2. 侵扰，打扰
   I don't want to intrude.

   我不想打扰。

vt.

1. 把……强加（在）[（+on/upon）]
   He tried to intrude his opinions on me.

   他想把他的意见强加给我。

2. 把……硬挤（入）[（+into）]
   He intruded himself into the conversation without a word of apology.

   他连招呼都不打就插进来讲话。

v.

1. come into a place or situation where one is unwelcome or uninvited.
   ▸introduce into or enter with adverse effect.
2. Geology  (of igneous rock) be forced or thrust into (a pre-existing formation).