基本解釋鳥(niǎo)類(lèi) 鳥(niǎo)群英漢例句雙語(yǔ)例句Three of the cases they studied found that the rise of West Nile virus in the U.S. corresponded to decreases in bird population density.他們?cè)谘芯窟^(guò)的三個(gè)案例中發(fā)現(xiàn)西尼羅河熱在美國(guó)的的流行與鳥(niǎo)類(lèi)種群密度的下降相關(guān)。Alaska's Rat Island is finally rat-free, 229 years after a Japanese shipwreck spilled rampaging rodents onto the remote Aleutian island, decimating the local bird population.阿拉斯加的鼠島,在狂怒的嚙齒動(dòng)物從一艘日本遇難船涌入這個(gè)遙遠(yuǎn)的阿留申島嶼、大量殺害當(dāng)?shù)伉B(niǎo)類(lèi)的 229 年之后,終于沒(méi)有老鼠了。treasure.1x1y.com.cnBird songs and calls as one of the most important features, which contain abundant biological information, are vital for the research of Avi-behavior, bird population structure and classification.鳥(niǎo)類(lèi)的鳴聲中包含有豐富的生物學(xué)信息,研究鳴聲對(duì)于了解鳴聲與行為的關(guān)系、鳥(niǎo)類(lèi)的種群結(jié)構(gòu)及種屬分類(lèi)具有重要的實(shí)際意義。權(quán)威例句Before the experiment got under way, they surveyed the bird population in every patch of woodland each season for two years—in other words, eight times in all.ECONOMIST: Ecology: Under the mistletoe TheNo-till, practised more in America than in Britain, means growing crops without ploughing fields, and leads to many-fold increases in bird population and a range of other environmental benefits.ECONOMIST: What the birds and bees saybird population更多例句詞組短語(yǔ)短語(yǔ)bird population community 鳥(niǎo)類(lèi)群落結(jié)構(gòu)bird population更多詞組