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Bone marrow transplantation began 20 years ago.是什么意思？

Bone marrow transplantation began 20 years ago.

骨髓移植开始于20年前。

相关词汇
bone marrow transplantation began years ago

bone

n. 骨头，尸骨，骨质物，有…样的骨头的；vt. 挑鱼刺，剔骨头，剔去…的骨；vi. 苦学，专心致志；

marrow

n. 骨髓，脊髓，滋养品，〈英〉食用葫芦；

transplantation

n. 移植，移植法，移居，移民；

began

v. 开始( begin的过去式 )，着手，创始，创办；

years

n. 年( year的名词复数 )，年纪，一年的期间，某年级的学生；

ago

adv. 以前，过去的，之前；
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
They were close to weaponizing ricin—a lethal plant toxin.
他们快把蓖麻毒素——一种致命的植物毒素——研发为武器了。
His sentiments were a throwback to the old colonial days.
他的观点还是从前殖民时代的那种观点.
a torrid love affair
狂热的恋情
The North American Indians used to make totem poles.
北美印第安人过去常建造图腾柱.
A thicket makes good cover for animals to hide in.
丛林是动物的良好隐蔽处.
She took a playful swipe at her brother.
她玩笑般地朝她弟弟挥手打去.
A tattered flag hung from the roof of the burnt - out building.
一面破旗挂在 烧毀 的建筑物房顶上.
Forensic dean blames administrative front courtyard to ought not to not see object tousle subpoena.
法院院长责备行政庭不该不看对象乱发传票.
The only moral tenet governing the conduct of business in the shop was that the goods should be genuine and the price fair.
货真价实,是商店唯一的道德.
This shouldn't be too taxing for you.
这对你来说不至于太费劲。
Attention must be paid on the synergic effect of smoking and silicosis in cancer complication.
吸烟和矽肺同时存在时,有必要注意协同作用.
The play was greeted with tepid applause.
这台戏只得到了零落的掌声。
his four-year tenure as President
他的四年总统任期
Having two fleshy ends connected by a thinner tendinous portion . Used of certain muscles.
二腹肌的有二个多内端,靠一较薄的腱状部分相连的.