A leading Nigerian blood specialist is the WHO . cancer. is alarmed at the growing numbers of cases of cancer - the name given to a class of diseases characterized by the uncontrolled growth of cells, which then form tumors.

VOA: standard.2010.06.16

F=ma. The a is this fellow here, and nothing else is given an independent name.

=ma,a就是这里的这个,其它的都没有独立命名

耶鲁公开课 - 基础物理课程节选

F=ma. The a is this fellow here, and nothing else is given an independent name.

=ma,a就是这里的这个,其它的都没有独立命名

耶鲁公开课 - 基础物理课程节选