“停下来,看看,想想不要成为国家卫生研究院的污染者-National Institutes of Health
Stop, look, think; dont be a polluter–National Institutes of Health (美国, 1887-)
“停下来,看看,想想不要成为国家卫生研究院的污染者-National Institutes of Health
Stop, look, think; dont be a polluter–National Institutes of Health (美国, 1887-)