最近幾周，墨西哥城開(kāi)始嚴(yán)打貪污，違章駕車(chē)City officials, however, defend the new rules, most of which will take effect in September. They note that past campaigns against drunk driving have been i...

為什么眼睛疾病會(huì)伴隨有視網(wǎng)膜的問(wèn)題呢？今天來(lái)解釋這個(gè)問(wèn)題The retina is the sensory tissue in the back part of the eye. It gathers light and captures images from the lens, much like film in a camer...

美國(guó)國(guó)會(huì)授予美國(guó)農(nóng)業(yè)科學(xué)家諾曼-伯勞戈國(guó)會(huì)金質(zhì)獎(jiǎng)?wù)?，并稱他為“綠色革命之父”In the 1940s, Norman Borlaug and a team developed highly productive and disease-resistant wheat for farmers in Mexico. A...

最近幾周，墨西哥城開(kāi)始嚴(yán)打貪污，違章駕車(chē)But critics, including many city motorists, are skeptical. Arturo is one of them. He says the new laws will only hurt those who have to drive and will do l...

美國(guó)國(guó)會(huì)授予美國(guó)農(nóng)業(yè)科學(xué)家諾曼-伯勞戈國(guó)會(huì)金質(zhì)獎(jiǎng)?wù)拢⒎Q他為“綠色革命之父”American agricultural scientist Norman Borlaug has received the Congressional Gold Medal. The award is the highest civil...

最近幾周，墨西哥城開(kāi)始嚴(yán)打貪污，違章駕車(chē)In recent weeks, there have been moves on both the federal and local level in Mexico to fight corruption and reinforce the rule of law. President Felipe Ca...

這是一部真實(shí)紀(jì)錄的影片，學(xué)生就是真的學(xué)生，老師也主要有真的老師扮演HINTS: MTV Chris Mass Akel"Chalk" 20120120 EDIT"They want to be entertained all the time and I would tell them, ‘look, I love mo...

這是一部真實(shí)紀(jì)錄的影片，學(xué)生就是真的學(xué)生，老師也主要有真的老師扮演"They want to be entertained all the time and I would tell them, ‘look, I love movies, I make them on the side, but you are not

溫室效應(yīng)造成極端氣候，中國(guó)這里發(fā)洪水，美國(guó)卻是干旱Experts say soybeans and cotton look better -- but not very much. Federal officials have declared all counties in Alabama a drought disaster area...

溫室效應(yīng)造成極端氣候，中國(guó)這里發(fā)洪水，美國(guó)卻是干旱Heat and drought are threatening some of America's most productive farmland. The Department of Agriculture says an early summer heat wave across ...