vaccines造句
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
vaccines.
他的小组处于疫苗科研的最前沿.