形容詞 intrusive:

1. tending to intrude (especially upon privacy)
2. of rock material; forced while molten into cracks between layers of other rock
3. thrusting inward

1. Intrusive viruses are hard to write and very difficult to remove without damaging the host file.
   入侵型病毒難以編寫，在去除它們時常常會破壞主文件。

in.tru.sive

adj.（形容詞）
Intruding or tending to intrude.
侵入的：闖入的或就要闖入的
Geology Of or relating to igneous rock that is forced while molten into cracks or between other layers of rock.
【地質(zhì)學】 形成侵入巖的：屬于或關(guān)于融入巖石裂縫或巖層之間時直接生成火成巖的
Linguistics Epenthetic.
【語言學】 增音的

【引伸】
intru.sively
adv.（副詞）
intru.siveness
n.（名詞）