So far in this century, three epidemics of it have been let loose in the world.

半個(gè)世紀(jì)已經(jīng)爆發(fā)了三次由獨(dú)裁滋生的傳染病黄页网站在线免费播放器。

But he adds that such large losses to a population are not unusual in epidemics.

但他同時(shí)指出国产专区在线观看欧美狂野，如果考慮到流行病，如此大規(guī)模的種群消失就習(xí)以為常了亚洲中文字幕va毛片在线。

Epidemics of cholera in Bangladesh: They are closely linked to flooding and unsafe water.

孟加拉國(guó)的霍亂疫情：它們是密切相關(guān)的洪水和不安全的水第一次处破女18分钟网站入口。

Starvation, endemic in China, is more acute in war, increases the hazard of epidemics.

當(dāng)時(shí)在戰(zhàn)爭(zhēng)中流行的嚴(yán)重的饑餓問(wèn)題增加了流行病的危險(xiǎn)。

Let's fully establish a veterinary system for the prevention of epidemics!

讓我們完美的建立起一個(gè)獸醫(yī)制度以預(yù)防傳染残』破笕cao97！

The vaccine is commonly provided to international travelers, but not to communities that suffer cholera epidemics.

該疫苗一般提供給跨國(guó)旅游的人，而不是霍亂盛行的地區(qū)欧美黑人巨大又粗又长。

Epidemics of infectious disease can escalate into pandemics, but do not always do so.

傳染性疾病的流行能夠升級(jí)至大流行疫情国产一级在视频，但也不總是這樣。

It's important to took at file spread of diseases throughout history to discover the causes and effects of epidemics.

我們有必要回顧—下歷史上疾病的傳播美女福利操一操，從而弄清楚傳染病的起因和后果亚洲天堂你懂得。

The World Health Organization has issued new rules to limit the international spread of epidemics and other public health emergencies.

世界衛(wèi)生組織已經(jīng)發(fā)布了新的規(guī)章用來(lái)限制國(guó)際疫情的傳播和其他突發(fā)公共衛(wèi)生事件。

Hog cholera epidemics occur in all the pig-rearing countries of the world, and due to its high transmissibility and high mortality poses a serious menace to the pig industry.

豬瘟在世界上養(yǎng)豬國(guó)家都有流行超碰在线毛片，因其傳染性強(qiáng)我把姪女日出水了在线看、死亡率高，嚴(yán)重威脅著養(yǎng)豬事業(yè)116美女极品A级毛片。