And warmer drier conditions have helped tree-killing beetles multiply.

更温暖、更干燥的环境有助于杀死树木的甲虫繁殖。

But that is difficult under current dry conditions.

但在目前干旱的条件下，这很难达到。

For example, narrow tree rings suggest dry conditions.

例如，狭窄的年轮意味着干燥的条件。

This has caused some of the severest dry conditions in 40 years.

这已经造成了40年来最严重的干旱状况。

" Warmer and drier conditions create drier fuel, " said Dr. Duffy, a physicist.

“温暖、干燥的环境会让（火灾所需的）燃料也变得更为干燥，”（是气候学家）也是物理学家的达菲博士说道。

They say the weather system has created extremely dry conditions in Indonesia.

他们表示，天气系统造成了印度尼西亚极端干旱的状况。

Authorities say strong winds and dry conditions are only feeding the flames.

当局表示强风和干燥条件助长了火势。

Our Senior International Correspondent Fred Pleitgen has more on the very dry conditions in Spain.

下面由本台高级国际记者Fred Pleitgen为我们带来更多关于西班牙旱情的报道。

But more than 20 years of dry conditions and sharp population growth is forcing changes.

但20多年的干旱和急剧的人口增长正在迫使各州做出改变。

It says planting of the grain is at 65 percent because of the dry conditions.

它表示，由于干旱的环境，这种谷物的种植率为65%。

The Horn of Africa region is facing the driest conditions in more than four decades.

非洲之角地区正面临四十多年来最干旱的状况。

El Nino refers to a weather pattern that typically brings hotter and drier conditions.

厄尔尼诺现象是指一种通常会带来更热、更干燥条件的天气模式。

The country is experiencing increased dry conditions because of a weather system called El Nino.

由于一种名为厄尔尼诺的天气系统，该国正在经历日益严重的干旱天气。

Northern California is said to be under extreme danger because of high winds and dry conditions.

据称因为大风和干燥的气候，北加利福利亚州正处在极度危险中。

Crews in Southern California, meanwhile, battled to contain a wildfire today amid dry and windy conditions.

与此同时，南加州的工作人员今天在干燥多风的条件下奋力控制野火。

In April, the dry conditions led forest officials to warn of another " catastrophic" year for fires.

今年4月，干燥的天气导致森林官员警告称，今年又将是火灾“灾难性”的一年。

More vegetation and dry conditions due to global warming now mean any year can have large fires.

由气候变暖导致的植被增多和干燥条件现在意味着每年都可能发生大火灾。

Dry and arid conditions usually slow bone decomposition, since many microbes can't survive such dry conditions.

干燥和干旱的环境通常会减缓骨骼的分解，因为许多微生物无法在这样的干燥条件下生存。

Researchers discovered a slow change to drier conditions during a period about 3200 years ago.

研究人员发现，在大约3200年前的一段时间里，气候逐渐变得干燥。

And the weather is expected to return to hot and dry conditions as early as this week.

本周初，天气将恢复又热又干的状态。