放射免疫测定fàng shè miǎn yì cè dìngfangshemianyicedingradioimmunoassayCharacters in this word免to spare, to excuse from定to decide, to fix, to settle射to shoot, to eject, to emit放to release, to liberate, to free测to survey, to measure疫epidemic, plague, pestilenceStudy it in Yanamino