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1.volatile a．易变的，多变的(characterized by or subject to rapid change)
词根影象：volat(飞)+ile--飞来飞去的--多变的
例：volatile demand多变的需求
同根词：volant (a．飞行的；矫捷的)：volary(n．大型鸟舍)
2.volunteer n.意愿者(a person who voluntarily undertakes or expresses a willingness to undertake a service);a.志愿的(being, consisting of, or engaged in by volunteers)
词根影象：volunt(意愿)+eer(人)--意愿者
例：We should disband our volunteer service and hire a commercial ambulance service.
同根词：benevolent(a．善心的，美意的)；volition(n．意志力)
3.voracious a．饥不择食的(devouring or craving food in great quantities)；贪心的(excessively eager; insatiable)
词根影象：vor(吃)+acious--吃得多的--饥不择食的
例：The survival of a rare New Zealand species of mistletoe is threatened both because its leaves are extremely tasty to a voracious opossum species and because its flowers are pollinated by two species of birds whose populations are in decline.
派生词：voraciously( ad.饥不择食地；得寸进尺地)
4.vortices n．漩涡（vortex的单数）
例：Sunspots, vortices of gas associated with strong electromagnetic activity are visible.
5.vulnerable a．易受打击的(capable of being physically wounded; assailable)
词根影象：vulner(伤)+able--易受打击的
例：The argument is most vulnerable to the objection.
派生词：vulnerably( ad.软弱地；易受损伤地)；vulnerability(n.缺点；易损性)
6.wage v.发起（和平）(to engage in or carry on);n．人为(a payment, usually of money for labor or services, usually according to contract and on an hourly, daily, or piecework basis)
记：wage作为“人为”这一意思各人比拟熟习，可以了解为“为了人为而妥协”
例：Agricultural revenues in excess of the amount needed for subsistence were used by medieval kings to wage war.
7.wanton a．无控制的，纵容的(being without check or limitation);淘气的(mischievous)
发音影象：“顽童”--淘气的
例：Customs inspectors are often treated not like government employees but wanton poachers by travelers.
8.warbler n．（能叫出柔和颤音的）鸣禽
例：Blue-winged warblers are unlike most species of warbler in which it is very difficult to tell the male and female apart.
9.warrior n．兵士(a man engaged or experienced in warfare)
词根影象：war(和平)+rior--战役的人--兵士
例：terracotta warriors秦始皇戎马俑
n. 盼望，热望 动词crave的如今分词
