Twelve potential vaccines are currently being tested on human volunteers.目前正在人类志愿者身上试验12种试用疫苗。Anti-malarial vaccines are now under-going trials.抗疟疾的疫苗正在试验阶段。His team are at the forefront of scientific research into vacci...
Katherine was forever secretive.凯瑟琳总是神神秘秘的。As he looked at Katherine, great sorrow clouded his eyes.他看着凯瑟琳，满眼忧伤。Hands out gropingly, he went toward Katherine.伸出手摸索着, 往凯瑟琳那边走.Katherine was frozen in horror.凯瑟琳吓呆了。Katherin...
The deep crevasse yawned at their feet.他们脚下的冰川有一道深深的裂缝.He yawned heavily.他打了个大呵欠。The gulf between them yawned wider than ever...他们之间的隔阂比以往任何时候都要深。He yawned and curled his body down farther beneath the poncho.他打了个呵欠,把身子再蜷...
The length of the fuselage was increased due to a degree of directional instability.由于存在某种程度的航向不稳定性，机身被加长了。For example : Left wing - to - body fairing seal is inconsistent in relation to fuselage.左大翼 - 机身整流罩封严胶不均匀.Undern...
As a group, today's old people are still relatively deprived.总的来说，当今的老年人依然相对贫困。Though his background was modest, it was in no sense deprived.尽管他家境一般，但也并不算贫穷。the stunted lives of children deprived of education未受教育的孩子...