n. 渴望，热望 动词crave的现在分词
2.volunteer n.志愿者(a person who voluntarily undertakes or expresses a willingness to undertake a service);a.自愿的(being, consisting of, or engaged in by volunteers)
例：We should disband our volunteer service and hire a commercial ambulance service.
3.voracious a．狼吞虎咽的(devouring or craving food in great quantities)；贪婪的(excessively eager; insatiable)
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.
例：Sunspots, vortices of gas associated with strong electromagnetic activity are visible.
5.vulnerable a．易受攻击的(capable of being physically wounded; assailable)
例：The argument is most vulnerable to the objection.
6.wage v.发动（战争）(to engage in or carry on);n．工资(a payment, usually of money for labor or services, usually according to contract and on an hourly, daily, or piecework basis)
例：Agricultural revenues in excess of the amount needed for subsistence were used by medieval kings to wage war.
7.wanton a．无节制的，放纵的(being without check or limitation);顽皮的(mischievous)
例：Customs inspectors are often treated not like government employees but wanton poachers by travelers.
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．战士(a man engaged or experienced in warfare)