period n. 1. 時代;期;時期;期間;階段。 2.〔the period〕現(xiàn)代,當(dāng)代。 3.周期;【地質(zhì)學(xué);地理學(xué)】紀(jì)。 4.終結(jié);句號。 5.【語法】長復(fù)合句,圓周句;【修辭學(xué)】掉尾句。 6.〔pl.〕美詞麗句;華麗的詞藻。 7.學(xué)時,課時,一節(jié)課;(比賽的)一節(jié)時間。 8.【醫(yī)學(xué)】過程,周期。 9.〔pl.〕月經(jīng)(期)。 10.【數(shù)學(xué)】(循環(huán)小數(shù)的)循環(huán)節(jié)。 11.【音樂】樂段。 the transitional period 過渡時期。 the warm-up period 【火箭】備射階段。 the catchwords of the period 現(xiàn)代流行話。 a turned period (字母上面的)上點。 the incubation period (病的)潛伏期。 monthly period 月經(jīng)。 at fixed periods 定期。 at stated periods 相隔一定時期;在一定時期。 come to a period 完結(jié)。 for a period of time 一個時期,一些時候。 put a period to sth. 使某事終止;取締某事。 round a period 練句。 adj. 1.(家具、服裝、建筑等)某一時代的。 2.(小說、戲劇等)逼真地描寫某一特定歷史時代的。 period furniture 仿古家具。 a period novel 描寫特定歷史時代的小說。 int. 〔口語〕就這樣〔強(qiáng)調(diào)話已經(jīng)講完了,=That's it! That's final!〕。
000 life on earth regresses during a new glacial period 000年前,地球上的生命在一個新的冰河時期中倒退。
Two thirds of the continent was covered in ice during glacial periods 該大陸的三分之二地區(qū)在冰河時代被冰覆蓋著。
Relating to or occurring during the time following a glacial period 冰期后的與冰期后的時期有關(guān)的,或在冰期后的時期里發(fā)生的
Above the rock in the right direction , one can see traces of the mountain movement of the glacial period half way at green phoenix peak 站在磕頭石的上方往右可以看到綠鳳峰半月腰處冰川時期山脈運動的痕跡。
The first of these glacial periods is often called the huronian glaciation because it is well exposed in rocks just north of lake huron in southern canada 第一次冰期稱為休倫冰期,因其遺跡在加拿大南部休倫湖北方的巖石中清晰可見。
In addition the average sedimentation rate was obviously higher in the interglacial period than in the glacial period in the drilling core ey02 - 1 in the north of mid - shelf 而東海中陸架北部ey02 - 1孔間冰期時的平均沉積速率明顯高于冰期時的平均沉積速率。
It is concluded from our study results that the coastal dunes outside the qilihai lagoon are inherited dune complex formed from the eolian dunes in the last glacial period 研究認(rèn)為,七里海外的海岸沙丘群是在末次冰期時期風(fēng)成沙丘群的基礎(chǔ)上演化形成的繼承性沙丘綜合體。
Considered of the genetic diversity of the 4 possible wild populations combined with the ecological environment of their habitats , populations wc and tm are regarded as the survival habitats in glacial period 在所有研究群體中,栽培的tx群體的遺傳多樣性水平最低。結(jié)合各群體所在地的生態(tài)環(huán)境綜合考慮,認(rèn)為wc和tm兩群體所在地最有可能為野生銀杏冰川期避難所。
Descending the celestial capital peak westwards , travelers go through the immortal gate keeper cave with vivid peach - resembling rock formations on the cave , pass crucian carp peak formed during the glacial period and cross the heavenly bridge where the sea exploring pine stands 在天都峰的西側(cè)往下走,人們要依次經(jīng)過“仙人把洞門” ,鯽魚背和天橋, “仙人把洞門”上有形狀如桃花的巖石,天橋鯽魚松形成于冰川時期,天橋上生長有探海松。
Studies of the petrology , textures and structures , depositional environment , contained fossils and age of the fluvial - lacustrine deposits indicate that they are the earliest record of the epiglacial area of the quaternary glacial period , representing the lower boundary of the quaternary glacial period 對該河湖相沉積的巖石、結(jié)構(gòu)構(gòu)造、沉積環(huán)境、所含化石特徵和形成時代等的研究表明,它是第四紀(jì)冰期冰緣區(qū)的最早沉積記錄,也是第四紀(jì)冰期的下限。
any period of time during which glaciers covered a large part of the earth''s surface; "the most recent ice age was during the Pleistocene" 同義詞:ice age, glacial epoch,
百科解釋
A glacial period (or alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate between glacial periods.