便宜的乡村住房正在这个国家的南部消失。
Cheap rural housing is vanishing in the south of the country.
7). … you could use this cream or a suppository to give you a fairly high dose of the proteins in the region where you thought the virus might be. (Para. 6)
①fairly ad.: more than a little, but much less than very 相当，颇 e.g.I’m fairly sure that this is the right address. 我十分确定就是这个地址。 Translation
我们相处得相当好。 We get on fairly well.
②dose n.: a measured amount of sth. such as medicine 一剂，一份 e.g.a dose of penicillin 一剂盘尼西林 Translation
标签上说一天服三次（药）。
The label says to take one dose three times a day.
8). We showed you can successfully treat the infected cells up to eight hours after they were exposed to the virus? (Para. 7)
up to: less than or equal to, but not more than a stated value, number or level; until多达；直到
e.g. Up to two hundred people were on board the ship. 船上有多达两百人。 Translation
直到昨天我们还不知道孩子在哪儿。
Up to yesterday, we had no idea where the child was.
9).The scientists have now won a grant from the American Foundation for AIDS Research to continue the work. (Para. 7)
grant n.: a sum of money given especially by the government to a person or organization for a special purpose 补助金，津贴 e.g. a local authority/government grant 地方政府津贴 Translation
他们奖给她补助金让她到国外学习一年。
They gave/awarded her a grant to study abroad for one year.
10) . Its director of research, Dr. Rowena Johnston, said no creams exist
which could be applied to the body after exposure to HIV. (Para. 7) be applied to:
a) (of a substance such as cream or paint) to be spread or rubbed on a surface涂抹，贴
e.g.Some medicine was applied to his wound. 给他伤口上涂了些药。 Translation
此防晒霜应该每三个小时涂抹在裸露处。
The suntan cream should be applied to exposed areas every three hours.
b) to be used for a practical purpose 应用
e.g. In this way the theory can be better applied to practice. 这样，此理论就能更好地应用于实践了。 Translation
这项规则不是所有情况都适用。 This rule cannot be applied to every case.
11) . The first generation of these products is now not far from being developed. (Para. 8)
far from: certainly not 远非，不但不
e.g. Far from relieving my cough, the medicine aggravated it. 这药非但不镇咳, 反而使我咳嗽得更厉害。 Translation
情况一点儿也不清楚。 The situation is far from clear.
12). They could be applied prior to sex or perhaps taken in the same way as the contraceptive pill. (Para. 8)
prior to: before a particular time or event 在……之前 e.g. the weeks prior to her arrival 她来之前几周 Translation
遗嘱是在他死亡前两天立的。
The will was made two days prior to his death.
13). Alternatively, if the woman is HIV positive, she could protect her partner from infection. (Para. 8)
alternatively ad.: used to suggest another possibility 可替代地；可供选择地
e.g. We could go to the Indian restaurant, or alternatively, we could try
that new Italian place.
我们可以去印度餐馆，或者，我们可以试一试那家新开的意大利餐馆。 Translation
或许，中年人的不幸福感反映了他们面临的时间压力，因为他们
要为工作和家庭奔波。
Alternatively, maybe this midlife unhappiness reflects the time pressures faced by those in their 40s, as they juggle work and family.
14). We are not going to wait around for 15 years and do nothing in the meantime. (Para. 8)
①wait around: to stay in a place and do nothing while you wait for sb. to arrive or sth. to happen 白白等着
e.g. We spent the whole day waiting around for something exciting to
happen, but nothing did.
我们一整天都在等待激动人心的事发生，但是结果什么事都没有。 Translation
你上哪儿去了?我在这儿等了两个小时。
Where have you been? I’ve been waiting around here for two hours. ②in the meantime: until sth. expected happens, or while sth. else is happening 同时，在……期间
e.g. Your computer won’t be arriving till Thursday. In the meantime, you can use mine.
你的电脑周四才能送到。这期间你可以用我的。
15). But destruction of the rainforest in north Queensland, Australia, means there are declining numbers of red-eyed tree frogs, which have bright green backs, yellow sides, a cream stomach and orange inside legs. (Para. 9)
destruction n.: the act or process of destroying sth. 破坏；摧毁 e.g.Many people are very concerned about the destruction of the rainforests.
很多人非常关注雨林的破坏问题。 Translation
敌人的炸弹造成了大面积的破坏。
The enemy bombs caused widespread destruction.
16). Around the world there are huge and rapid declines in the numbers of amphibian species. (Para. 10)
species n.: a group of animals or plants which are all similar and can breed together to produce young animals or plants of the same kind as them （动植物的）物种，种 e.g. The species is [are] valuable. 这一[些]物种很珍贵。 Translation
这一地区发现了一百多种昆虫。
Over a hundred species of insect are found in this area.
17). When we don’t take care of the ecosystems we have on the planet we risk losing something like this. (Para. 10)
risk v.: to put sth. in a situation in which it could be lost, destroyed, or harmed 使遭受（失去、毁坏或伤害）的危险 e.g. Don’t risk your health. 不要拿你的健康冒险。 Translation
当他的公司破产时，他有失去房子的风险。
He risked losing his house when his company went bankrupt. risk n.: the possibility of sth. bad happening 危险（性），风险 e.g. The risk (that) we might fail made us work harder.