動詞 invade:

1. march aggressively into another's territory by military force for the purposes of conquest and occupation
   同義詞：occupy
2. to intrude upon, infringe, encroach on, violate
   同義詞：intrude on, obtrude upon, encroach upon
3. occupy in large numbers or live on a host
   同義詞：overrun, infest
4. penetrate or assault, in a harmful or injurious way

1. Germs may invade the organism.
   細菌會侵入有機體。
2. I object to our privacy being invaded.
   我反對我們的隱私權(quán)受到侵害。
3. The town was invaded by reporters.
   這個城市涌進了大批記者。

in.vade

v.（動詞）
in.vad.ed,in.vad.ing,in.vades
v.tr.（及物動詞）
To enter by force in order to conquer or pillage.
侵略：以武力進入以便征服或掠奪
To encroach or intrude on; violate:
侵害：侵占或侵入；侵犯：
例句：
.The principal of the trusts could not be invaded without trustee approval.(Barbara Goldsmith)
.未經(jīng)受托人同意，受托的原則不被侵犯.(芭芭拉·哥爾德史密斯)

To overrun as if by invading; infest:
大批進入：象侵略似的橫行于；大批出沒于：
例句：
.About 97 the shipworm invaded the harbor of San Francisco.(Rachel Carson)
.約在97年鑿船蟲襲擊了舊金山港.(雷切爾·卡森)

To enter and permeate, especially harmfully.
充溢：進入并且滲透， 尤指有害地
v.intr.（不及物動詞）
To make an invasion:
侵略：
例句：
.The X-rays showed that the cancer, which had invaded deeply into the chest cavity, was retreating.(Zach Rosen)
.X光照片顯示曾嚴重侵入胸腔的癌細胞有消退的跡象.(佐奇·羅森)

來源：
Middle English
中古英語
from Old French invader
源自 古法語 invader
from Latin inv3dere
源自 拉丁語 inv3dere
in- [in] * see in- 2
in- [在…里面] *參見 in-2
v3dere [to go]
v3dere [走]

【引伸】
invad.er
n.（名詞）