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invade went w-v a-e t-d n
To enter by force in order to conquer or pillage.
To encroach or intrude on; violate: “The principal of the trusts could not be invaded without trustee approval” (Barbara Goldsmith).
To overrun as if by invading; infest: “About 1917 the shipworm invaded the harbor of San Francisco” (Rachel Carson).
To enter and permeate, especially harmfully.
To make an invasion: “The X-rays showed that the cancer, which had invaded deeply into the chest cavity, was retreating” (Zach Rosen).
vt.侵入; 侵略(别国); 侵犯(主权等)；拥入; 挤满；(疾病, 感情, 声音等)袭来, 侵袭

例句：
In the summer tourists invade the mountain village.
夏天游客成群结队地到这个山村来。

invasion
The act of invading, especially the entrance of an armed force into a territory to conquer.
A large-scale onset of something injurious or harmful, such as a disease.
An intrusion or encroachment.
n.入侵; 侵略; 闯入；侵害, 侵犯；【医】发病, 发作

习惯用语:
make an invasion upon
侵入; 袭击

例句：
France itself was threatened with invasion.
法国自身也受到入侵的威胁。
I object to these invasions of my privacy.
我反对这些侵扰我私生活的行径。

evade
To escape or avoid by cleverness or deceit: evade arrest.
To avoid fulfilling, answering, or performing: evade responsibility. See Synonyms at escape. To fail to make payment of (taxes).
To avoid giving a direct answer to.
To baffle or elude: The accident evades explanation.
To practice evasion.
To use cleverness or deceit in avoiding or escaping.
v.逃避, 躲避; 回避; 漏(税)

例句：
They evade paying taxes by living abroad.
他们住在国外以逃避交税。
Tim tried to catch her arm but she evaded him.
蒂姆想要抓住她的手臂但她避开了他。

pervade
To be present throughout; permeate
to become spread throughout all parts of:
vt.蔓延, 遍及, 弥漫, 充满, 渗透

例句：
There was a smell of coffee pervading the atmosphere.
空气里弥漫着咖啡的气味。
This error pervades all present-day systems.
这种错误在当今各种体制中都普遍存在。

wade
To walk in or through water or something else that similarly impedes normal movement.
To make one's way arduously: waded through a boring report.
To cross or pass through (water, for example) with difficulty: wade a swift creek.
The act or an instance of wading.
vi. 跋涉
vt. 涉水；费力行走
n. 跋涉；可涉水而过的地方

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Because the pond is deep enough for an adult to wade into but too deep for a child to stand.
这个池塘不深，一个成年人足以趟过,然而小孩子却无法站立。

waddle
To walk with short steps that tilt the body from side to side.
To walk heavily and clumsily with a pronounced sway.
A swaying gait
n. 蹒跚；摇摆的步子
vi. 摇摇摆摆地走；蹒跚而行

例句：
A family of ducks waddled along the river bank.
一群鸭子沿 河岸摇摇摆摆地走。