Researchers have been determined to figure out how bird flu spreads from human to human worldwide.

研究人员下决心要弄清楚禽流感在全球范围内是如何在人与人之间传播的。

youdao

The virus is transmitted to humans by close contact with infected birds or their excrement, and cannot be passed from human to human.

该病毒通过与受感染的鸟类或其粪便的密切接触传播给人类，不能在人与人之间传播。

youdao

"Human to human transmission would be a catastrophic event," she says.

“人类间的传播将成为一个灾难性事件，”她说。

youdao

The United Nations Office on Drugs and Crime has named him as a goodwill ambassador to combat human trafficking.

VOA: special.2009.06.01

So the animal may be eaten to satisfy the human hunger for flesh, but the life essence itself belongs to God.

因此，人们可以吃动物，来满足对肉的渴望，但是血属于上帝。

耶鲁公开课 - 旧约导论课程节选

Not even the muse Calliope, the muse of epic poetry, was in a position to avert a human tragedy like this.

即使是缪斯之一克莱俄帕，掌管史诗的女神，也不能避免这样一场人间悲剧。

耶鲁公开课 - 弥尔顿课程节选

There has also been occasional human-to-human transmission, according to the World Health Organization.

FORBES: China H7N9 Bird Flu Cases Rise By Five; Four Provinces Report Illnesses In One Day

There is no sign that the virus is being transmitted from human to human.

NPR: Asian Stocks Up, Japan's Nikkei Extends Gains

"We continue to see human-to-human transmission, community transmission, primarily in North America, " said WHO Assistant Director-General Keiji Fukuda.

CNN: Mexico lowers swine flu alert as businesses in capital reopen