The first organisms that reproduced sexually were free-floating plankton.最早开始有性繁殖的生物是四处漂浮的浮游生物。The fish live on the plankton.这种鱼靠吃浮游生物为生。Plankton is at the bottom of the marine food chain.浮游生物处于海洋食物链的最底层....

n.太阳能利用装置...

plane的近义词有：aeroplane, airplane, aircraft, plane, jet, helicopter。下面这些名词均有"飞机"的含义：aeroplane和airplane专指普通飞机，不包括helicopter(直升飞机)。aeroplane为英国英语的拼法。airplane ：为美国英语的用词。aircraft ：常用作集体名词，也可指一架飞机，其含义包括直升飞机和飞艇等。plane ：本义为"平面"，在航...

栽树...

Where Dr Shapland feels the system is not working most effectively is in respect of professional training.沙普兰博士认为系统在专业培训上的运作效率不是非常高。Ann Shapland looked puzzled.安·沙普兰显得茫然不解....

plant trees的音标：...

heterotransplant的音标：heterotransplant的英式发音音标为：[hetərəʊtræns'plɑ:nt]heterotransplant的美式发音音标为：[hetəroʊtræns'plɑnt]...

The more recent conifer plantations cannot yet compare with the old woodlands.年代较近的针叶树林场还比不上年代久远的林场。A system of forced labour was used on the cocoa plantations.可可种植园中曾实行强迫劳役制。The storm was the most powerful to hit Hawaii...

planets的音标：planets的英式发音音标为：[p'lænɪts]planets的美式发音音标为：[p'lænɪts]...

These statements are accompanied by a series of explanatory notes.这些陈述后面有一系列解释性注释。There are explanatory notes at the back of the book.书后有注解。See explanatory notes at the foot of this page.参见本页下端的注解....

Hormone implants are used as growth boosters.激素植入物被用作生长辅助剂.Perhaps the most far - reaching project is an initiative called Living Implants From Engineering ( LIFE ).也许最具深远意义的项目,是刚刚启动的建造活体移植工程 ( LIFE ).Before long, they m...

n.前苏联国家计划委员会...

mailplane的音标：mailplane的英式发音音标为：['meɪlpleɪn]mailplane的美式发音音标为：['meɪlpleɪn]...

v.种植( plant的过去式和过去分词 )，建立，移植（动物、植物），在（某处）栽种...

We slammed the gate after them, wedging it shut with planks.他们出去后，我们在后面砰地把大门关上，并用板条抵死。The house was built solidly of rough wooden planks.这房子是用粗木板牢固地建造的.We sawed the log into planks.我们把木头锯成了木板....

adv.说明地，做为解释地...

n.计划( plan的名词复数 )，打算，平面图，示意图v.计划，打算，设计( plan的第三人称单数 )...

By the 1930s the wristwatch had almost completely supplanted the pocket watch.到了20世纪30年代，手表几乎完全取代了怀表。In most offices, the typewriter has now been supplanted by the computer.当今许多办公室里, 打字机已被电脑取代.The prime minister was supp...

esplanade的复数形式为：esplanades...

Laplander的音标：...

He arrives in his biplane and crash lands it in a tree.他驾驶双翼飞机到达，在一棵树上紧急降落。Early on 14 November Ely Curtiss's pusher biplane was hoisted aboard.十一月十四日晨,伊利的柯蒂斯推进式双翼机被吊上船.Forever may fly by oneself biplane wing soarin...

n.代偿性月经...

n.(plural form of plant,plant的复数形式)植物，农作物，植物( plant的名词复数 )，工厂，发电厂，幼苗v.种植( plant的第三人称单数 )，建立，移植（动物、植物），在（某处）栽种...

In hospitals, business plans vie with patients for doctors' attention.在医院，经营方针和病人都是医生所要关心的。Environmental groups are up in arms about plans to sink an oil well close to Hadrian's Wall.环保组织极力反对在哈德良长城附近打油井。I'...

Actinoplanes的音标：...

Does life exist on other planets?其他行星上有生命吗？Which planets can sustain life?哪些行星可以维持生命的存在？Asteroids, also known as " minor planets ", are numerous in the outer space.小行星, 亦称为 “ 小型行星 ”, 在外太空中不计其数....

hydroplanes的音标：...

The law of momentum conservation could supplant Newton's third law.动量守恒定律可以取代牛顿第三定律.The duke plotted to supplant the king.公爵阴谋取代国王的地位.The steam engine began to supplant the muscular power of men and animals.蒸汽机开始取代人...

He planed the board smooth.他刨平了这块木板.He planed in from New York.他从纽约乘飞机到此.Every piece of timber was planed, cut to size and stained with cedar preservative.每根木材都被刨平了，切割成一定尺寸，并涂上了雪松防腐剂。...

n.超平面...