柯林斯詞典clinical trial (clinical trials) 1. N-COUNT When a new type of drug or medical treatment undergoes clinical trials, it is tested directly on patients to see if it is effective. 臨牀試騐 Two rival laser surgery systems are undergoing clinical trials in the U.S. 兩個(gè)競爭的激光手術(shù)系統(tǒng)正在美國進(jìn)行臨牀試騐。 返回 clinical trial