We know that many animals do not always stay in one place,birds,fish and other animals within a certain period of time to move from one place to another.They move for many reasons,provoked when the cold comes,many birds are migrating to warmer places for food.Salmon was born in fresh water to salt water but swim thousands of miles to go and live there.When the salmon in old age,will return to its birthplace of fresh water,and then come to an end.In Northern Europe there is a rat,when this increase in the number of rats is too congested,they left home to move to low mountain land.Sometimes they will always move to the beach,when they fell into the sea when the number of drowned rats.Recently,scientists of a lobster migration were studied.Each year,when bad weather comes,lobsters are often arranged in the beginning of a team went to sea,no one knows why they do this,and no one knows where they will go.So,sometimes we know why Why do humans and animals from one place to move to one place,but other times we do not know.Maybe just like bio-tourism.請(qǐng)翻譯成地道的漢語(yǔ)翻譯漢語(yǔ)？你給的不就是漢語(yǔ)么感覺(jué)漢語(yǔ)部分不夠精美，懸賞10分譯成漢語(yǔ)。我們知道許多動(dòng)物并不總是待在一個(gè)地方，像鳥(niǎo)類、魚(yú)類還有其他一些動(dòng)物會(huì)在一定的時(shí)間里從一地遷徙到另一地。他們遷徙的原因有很多，當(dāng)寒冷到來(lái)的時(shí)候，許多鳥(niǎo)兒都遷徙到溫暖的地方去覓食。大馬哈魚(yú)出生在清澈的淡水水域里，但會(huì)不遠(yuǎn)萬(wàn)里游到咸水中去并在那里生活。當(dāng)大馬哈魚(yú)年老的時(shí)候，他們又會(huì)回到他們的淡水出生地，然后壽終正寢。在北歐有一種老鼠，當(dāng)這種鼠數(shù)量增長(zhǎng)到多過(guò)于擁堵的時(shí)候，他們就會(huì)離開(kāi)山里的家遷往平原地區(qū)。有時(shí)他們會(huì)一直跑到海邊，當(dāng)他們掉進(jìn)大海的時(shí)候，許多老鼠都被淹死。近來(lái)，科學(xué)家們對(duì)一種龍蝦的遷徙進(jìn)行了研究。每年，當(dāng)惡劣的天氣到來(lái)時(shí)候，龍蝦們總是排成長(zhǎng)長(zhǎng)的隊(duì)伍開(kāi)始向海里爬去，沒(méi)有人知道他們?yōu)槭裁匆@樣做，也沒(méi)有人知道他們將爬向何處。所以，有些時(shí)候我們知道人類和動(dòng)物為什么會(huì)從一地遷徙到一地，但有的時(shí)候我們卻不知道。也許他們只是喜歡旅游。