n.狡猾；詭計(jì)多端
The wiliness of the trematodes helps explain how they came to represent such a big chunk of the animal biomass, say the researchers. 研究人員稱(chēng)，吸蟲(chóng)的狡猾特性有助于說(shuō)明它們何以在動(dòng)物中占有如此巨大的數(shù)量。
