41.   The study was not a clinical trial to test a particular drug or treatment, but a basic scientific study designed to learn about lung function.

n. + function >>共 488
brain 6.48%
government 3.64%
search 3.44%
kidney 3.10%
lung 2.77%
heart 2.56%
school 2.09%
support 1.89%
body 1.82%
management 1.75%
lung + n. >>共 145
cancer 49.67%
disease 8.30%
infection 6.10%
problem 2.81%
surgery 2.42%
damage 2.20%
tissue 2.11%
transplant 1.93%
function 1.80%
condition 1.58%
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