2。 The virus replicates by attaching to a cell and injecting its nucleic acid。 病毒通过附着在细胞上并注入核酸来实现复制。
vision[vi?n]n。 视力,视觉;幻觉
例句 When crayfish are retained continuously in the dark; even for four to five months; their pound eyes continue to adjust on a daily schedule for daytime and nighttime vision。 当螯虾持续待在黑暗中,甚至长达4到5个月的时间时,它们的复眼仍能根据日夜交替进行调整。
同义 sight(n。 视力)
vulnerable[v?ln?r?bl]a。 易受攻击的,易受伤的
例句 Amphibians are especially vulnerable to pesticides dissolved in the water。 两栖类动物尤其容易受到溶解于水中的杀虫剂的伤害。
同义 unprotected(a。 无保护的)
要点 vulnerable除了可以指人或动物易受伤害以外,还可以用于描述环境、国家或形势的脆弱,比如:Excessive numbers of cattle have made the land unprotected and vulnerable。
wakefulness[weikfln?s]n。 觉醒
例句 1。 Of all the physiological differences in human sleep pared with wakefulness that have been discovered in the last decade; changes in respiratory control are most dramatic。 在过去10年间,人们发现在人类清醒与睡眠时所有的生理差异中,呼吸控制的变化最为明显。
2。 Using an EKG(electrocardiogram)machine that picks up brain wave activity; wakefulness can be observed and measured。 通过使用可以获取脑电波活动的心电图机器,人们可以观察并测量觉醒情况。
同义 awakening(n。 觉醒)
yawn[j?:n]n。 哈欠 v。 打哈欠
例句 Yawning is distracting; consumes energy and takes time; which is almost certainly doing something important in adults as well as in fetuses。 打哈欠是分心的、消耗能量和时间的。对于成人和胎儿来说,打哈欠都是非常重要的。
信号词汇篇
abruptly[?br?ptli]ad。 突然地,唐突地
例句 1。 As moves from layers of rocks documenting the end of the Cretaceous; many plants and animals disappeared abruptly from the fossil record; and this represented the beginning of the Cenozoic。 就像岩层运动记录着白垩纪的终结那样,许多植物和动物也突然从化石记录中消失了,而这代表新生界的开始。
2。 There is a question related to the evidence that the invertebrate fauna of the Mediterranean had experienced a great change abruptly about 6 million years ago。 关于地中海地区无脊椎动物区系于大约600万年前经历了突然的巨变的证据存在着质疑。
同义 suddenly(ad。 突然地)
要点 abruptly通常表示一种意料之外的突然变化,目的是吸引读者的注意。其用法类似于suddenly,shortly以及sharply。
advent[?dvent]n。 到来,来临;出现
例句 1。 With the advent of projection in 1895…1896; movie became a popular form of mass consumption。 随着1895至1896年电影放映机的出现,电影成为了一种流行的大众消费形式。
2。 With the advent of power…driven machinery; home industry has to give way to the production in mills and factories。 随着动力机器的出现,家庭式产业不得不让位于磨坊和工厂的生产。
同义 arrival(n。 到来);emergence(n。 出现)
派生 adventure(n。 冒险;投机活动);adventurer(n。 冒险家;投机商人)
apparent[?p?r?nt]a。 显然的;表面上的;貌似(真实)的
例句 1。 Because of the contradiction of the data and the apparent changes of the mechanisms; the studies bee plicated。 由于数据的矛盾以及机制的明显变化,研究变得复杂了。
2。 It was apparent that the glaciation happened in the relatively recent past for the drift was soft and looked like freshly deposited sediment。 很明显,冰川作用就是在不久的过去发生的,因为漂流的浮冰很柔软,看起来就像刚沉淀的沉积物一样。
同义 obvious; evident(a。 明显的)
要点 apparent在文中通常起强调的作用,比如:It was apparent that。。。这一句型。其副词形式apparently的出现频率也比较高,意为“显然地,明显地”,如:Apparently; the most obvious reason is。。。
approximate[?prɑ:ksimeit]v。 接近,近似[?prɑ:ksim?t]a。 大约的
例句 1。 The approximate range of the circadian rhythm of horseshoe crabs is 22。2 to 25。5 hours。 鲎类生理节律的大致范围是22。2小时至25。5小时。