例如，被普遍视为其他抗菌素失效后最后一种可用抗生素的粘菌素，由于在动物饲养中的过度使用，特别是在中国，现在正在快速失效。
For example, colistin, which is generally regarded as one of the last usable antibiotics in humans after others have failed, is losing its effectiveness, owing to overuse in animal farming, notably in China.