4周搞定2000+托福核心词
出生；血统，出身；起源
birth
常考释义
Limestone may be found in the Cambrian or—300 million years later—in the Jurassic strata, but a trilobite—the ubiquitous marine arthropod that had its birth in the Cambrian—will never be found in Jurassic strata, nor a dinosaur in the Cambrian.
人类有可能在侏罗纪时期的地层中发现寒世纪或者3亿年后的石灰岩，但绝不可能在侏罗纪时期地层中发现三叶虫化石（三叶虫是寒武纪非常普遍的水生节肢动物），也不可能发现寒武纪时期的恐龙化石。
来源于：阅读OFFICIAL6 P2n. 世系；血统；出身
His birth, background, and career show that you can make it on merit alone.
他的出身、背景和职业表明，一个人仅凭自己的能力就可以取得成功。
men of low birth
出身卑微的人
He was not of noble birth, and the nobility looked down on him.
他不是贵族出身，因此贵族们瞧不起他。
n. 出生；诞生
premature births
早产
He was an Iranian by birth.
他在血统上是伊朗人。
I was going to have to leave the place of my birth.
我将不得不离开我的出生地。
n. 分娩；生产
It was the birth of his grandchildren which gave him greatest pleasure.
孙儿辈的出生给他带来了极大的快乐。
She concealed her pregnancy right up to the moment of birth.
她隐瞒了自己怀孕的事，直到孩子出生。
She weighed 5lb 7oz at birth.
她出生时重5磅7盎司。
She's due to give birth at any moment.
她随时可能分娩。
She's just given birth to a baby girl.
她刚生了个女儿。
The females congregate every spring to give birth to their young.
这些雌性动物每到春天便聚集在一起产崽。
n. 创始；诞生；出现；起源
the birth of popular democracy
人民民主的诞生
The great thinkers of that time gave birth to some interesting ideas.
那个时期的伟大思想家们产生了一些有趣的想法。
These events gave birth to the Solidarity trade union.
这些事件使团结工会得以成立。
n. 孩子；子孙；崽<古>
vt. 生（孩子）
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