The use of an antimicrobial to treat an infection impacts not only the specific pathogen causing disease, but also decimates populations of susceptible organisms throughout the body. 使用抗菌素治疗感染时不仅会打击引起疾病的特定病原体,也会大量毁灭整个体内的敏感生物种群。
Traders and hedge funds are betting that corn prices will soar to never-before-seen prices of$ 9 a bushel or more, as the worst US drought in half a century decimates the global corn crop. 由于美国半个世纪以来最严重的旱情导致全球玉米收成大幅减产,交易员和对冲基金纷纷押注玉米价格将飙升至每蒲式耳9美元这一前所未见的水平、甚至更高。