from a more pragmatic atandpoint,evidence abounds that animal subjects are still an indispensable pfrom a more pragmatic atandpoint,evidence abounds that animal subjects are still anindispensable part of scientific research at this phase of human dev

from a more pragmatic atandpoint,evidence abounds that animal subjects are still an indispensable p
from a more pragmatic atandpoint,evidence abounds that animal subjects are still an
indispensable part of scientific research at this phase of human development.

从务实的角度来看,证据显示,人类发展到此阶段,动物学科仍然是科学研究领域中必不可少的一部分.