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- Antigen shift :major changes in the antigenicity of an influenza virus.It is the basis for the flu epidemics, pandemics. 甲型病毒“飘变”的结果是流感每年都会发生，每年引发流感的毒株都有可能不同，人们每年都需要重新接种流感疫苗进行预防。
- Pandemic influenza emerges as a result of influenza viruses undergoing major genetic changes known as antigenic shift. 大流行流感出现的原因,是因为流感病毒出现称为抗原转移的重大基因变异。
- The surface antigens of influenza viruses undergo frequent changes. Such changes can be minor called antigenic drift or major called antigenic shift. 流感病毒的表面抗原会常常改变,这些改变有时较小,称为抗原漂移antigenic drift,有时则较大,称为抗原转移antigenic shift。
- An hour later they came off the night shift. 一个钟头之后他们下夜班了。
- He had to make shift with what was on hand. 他只好用现有的东西将就应付。
- He always tries to shift the blame to someone else. 他总是试图将过错推卸给别人。
- He had to make a shift with what was on hand. 他只好用现有的东西将就应付。
- No detergent can shift these stains. 任何清洁剂都不能除掉这些污迹。
- You have to shift as you drive around the corner. 你拐角时要换挡变速。
- The attraction between an antigen and an antibody. 化合力抗原和抗体之间的相互吸引
- They were taking turns to be on the night shift. 他们轮流做夜班。
- Should I shift gears before making a turn? 我拐弯之前该不该换挡?
- He's have to shift for himself since his mother die. 他母亲去世後他只好自谋生计。
- The tools shift around in the car boot every time we turn a corner. 我们每次转弯，汽车行李箱里的工具就来回动。
- Her husband is on the late shift, so she has turned night into day. 她丈夫上晚班，听以她把白天和夜晚颠倒过来。
- antigen shift 抗原转变
- Each antigen may have many different determinants. 每一个抗原分子可以有数个不同的决定簇。
- As a temporary shift, he covered up the leak with a plastic bag. 作为权宜之计，他用塑料袋把漏洞给包上了。
- When their parents died, the children had to shift for themselves. 孩子们在父母死後只好自谋生路。
- The supervisor always start his new employee on the lobster shift. 领导总是让刚开始工作的新职员值夜班。
