The half - life of francium is 22 minutes.钫的半衰期是22分钟.Francium is the densest of the Alkali Metals and also radioactive.钫是碱金属中密度最大的,具有放射性.Even Francium's most stable isotope, Francium - 223 only has a half - life of ...

coaleum的音标：coaleum的英式发音音标为：['kəʊlɪəm]coaleum的美式发音音标为：['koʊlɪrm]...

n.庞大的，巨大的( jumbo的名词复数 )...

bruma的音标：bruma的英式发音音标为：[b'rʌmə]bruma的美式发音音标为：[b'rʌmə]...

Car stickers can be attached to the bumpers or windows.汽车贴纸可以贴在防撞杆上或车窗上.Our bumpers just grazed ( ie touched each other ) as we passed.我们 错车 时保险互相 蹭 了一下.Would you like to do one of your intros, or bumpers , or whatever y...

[计] 文件编制...

n.论坛，讨论会，专题讨论节目，集会的公共场所，提供公开讨论的媒体，法庭...

As Wren's epitaph famously declares, the cathedral itself is his monument.众所周知，雷恩的墓志铭中写道，大教堂本身就是他的纪念碑。By his international achievements he leaves a fitting monument to his beliefs.他在国际上的成就为其信念作出了最好的注解。The monument p...

plume的现在进行时为：pluming...

summarize的第三人称单数（三单）为：summarizes...

n.欧夏至草...

luminosity的音标：luminosity的英式发音音标为：[ˌlu:mɪ'nɒsətɪ]luminosity的美式发音音标为：[ˌluːmɪ'nɒsəti]...

fulcrum的音标：fulcrum的英式发音音标为：['fʊlkrəm]fulcrum的美式发音音标为：['fʊlkrəm, 'fʌl-]...

Ivanium的音标：...

He bumbled through his speech.他结结巴巴地讲完了他的演说.The professor bumbled absent - mindedly along the road.教授 心不在焉 地沿途瞎遛.The ancient empire was crushed and bumbled into the dust.这个古老的帝国被摧毁,遭到了奇耻大辱....

v.结成块( lump的过去式和过去分词 )，把…归并在一起（考虑），将人[物]同等对待[分类]，集总...

跳远...

pumpkin的复数形式为：pumpkins...

n.肱上膊，肱部...

assumption的音标：assumption的英式发音音标为：[ə'sʌmpʃn]assumption的美式发音音标为：[ə'sʌmpʃən]...

n.诽谤，中伤...

云母箔，胶合云母箔...

sum的近义词/同义词有：total, quantity, whole, amount, entirety, number, quantity, payment, entirety, total, whole, amount, lot, all。n.sum的近义词（总数;全部）：total, quantity, whole, amount, entirety。sum的近义词（其他释义）：number, quantity, payment...

石叶藻属...

v.挖出，发掘出( exhume的过去式和过去分词 )...

opium的音标：opium的英式发音音标为：['əʊpiəm]opium的美式发音音标为：['oʊpiəm]...

incumbent的复数形式为：incumbents...

dumping的音标：dumping的英式发音音标为：['dʌmpɪŋ]dumping的美式发音音标为：[]...

n.木材，隆隆声，废物vt.& vi.砍伐，笨重地行进，胡乱堆积...

enumerate的现在进行时为：enumerating...