The study will evaluate the long-term effects of exposure to radiation. 本研究將對接觸輻射的長期影響作出估價。
They may not look at effects over the long term, assuming that if a treatment helps initially, patients will be better off. 他們可能不注意長期影響,如果某種治療最初有所幫助,那麼就會斷定該治療對患者有效。