The smallpox virus , looking like an oil painting .

天花病毒，看上去就像一幅油画一样。

Man has vanquished only one disease , smallpox .

人类只征服过一种疾病天花。

Only smallpox has been eradicated .

只有天花已经被根除。

Almost everyone who got smallpox developed a distinct rash .

几乎得天花的所有人都会有明显的疹子。

Smallpox was probably the single biggest scourge to hit north america .

天花可能是袭击美洲的最大的一个灾祸。