And bubonic plague, spread by rat fleas, is normally preceded by the death of hordes of rats (only then do the fleas opt for humans). Yet no one in 1348 recorded this.
黑死病由鼠蚤传播，在此之前通常都有大批的老鼠死亡(只有在这时跳蚤才选择人类作宿主)，但在1348年没有人记录下这些。
Today we will be looking at pictures of fleas, rat eyes, cancer and soy sauce.
今天我们会看到跳蚤、鼠眼、肿瘤和酱油的照片。
By July King Charles had fled and ill-advised instructions to eradicate all the cats and dogs in the city sent the rat population skyrocketing -- rats carried the fleas that carried the disease.
到了七月，当时的国王查尔斯二世被迫离开伦敦，临走前做出了导致瘟疫扩散更快的错误决定。 他下令宰杀了城中所有的猫狗致使鼠患成灾，而老鼠身上的跳蚤正是传播瘟疫的始作俑者。
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