The free cell wall formation occurs first in the micropylar end when the embryo is 4-6 celled stage, then to the chalazal end and the center.
当胚发育到4—6个细胞时，在胚囊珠孔瑞的游离核之间先形成细胞壁。细胞壁的形成是以自由壁的方式从珠孔端到合点端自外向内进行。
They pay no utilities, have free access to the Internet on computers provided for them, along with fax machines, free cell and home phones and cable TV.
他们不用支付水电费，配置的电脑可以上网，还有传真机、免费手机、家用电话和有线电视。
The fermentation speed of the immobilized yeast cell by hatch and continuous is 24% higher and more than 8 times than that of the free cell by batch fermentation respectively.
固定化酵母细胞分批和连续发酵，分别比传统的游离酵母分批发酵效率提高24％和8倍以上。
For the multitasking portion of the experiment, researchers asked the volunteers to complete a verbal version of the memory test on a hands-free cell phone while driving in a simulator.
在实验的多任务部分，研究者要求志愿者在进行模拟驾驶的同时完成一项口头的非手持电话记忆测试。
Such virus-free cells could eventually be used to test new cardiac drugs, or for stem cell-derived implants to help patients whose cardiomyocytes die in a heart attack, according to Hopkins.
根据霍普金斯的看法，这样子的无病毒的细胞可以最终被用来检验新的心脏疾病的药，或用来帮助因心脏病而心肌细胞坏死的病人进行干细胞移植。
The experimental contrast of the same strain of bacteria that biodegrades phenol in immobilized cell state and in free cell state proved that red brick fragments is a fine carrier material.
通过同一菌种在固定状态和游离状态降解含酚废水的实验对比，证明红砖碎粒是一种优良的载体材料。
A scientist showed that mouse leukemia could be transmitted by cell-free filtrates.
一位科学家发现小鼠白血病可以通过细胞游离滤液传播。
The results showed that both the cell-free extract and culture supernate from mouse SRS-82 cell line were leukemogenic.
结果表明SRS-82 株的无细胞提取液和其培养上清液的离心沉淀物皆具有致白血病活性。
Cell phones are a travel necessity nowadays, multitasking as alarm clocks, not to mention free long distance calls.
如今，手机是出游的必备品，可以当闹钟用，当然更少不了免费的长途电话了。
As an antioxidant, lycopene protects cell structures and DNA against the nefarious effects of free radicals-small particles that damage healthy cells and allow tumor cells to develop.
作为抗氧化剂，番茄红素可以保护细胞结构和DNA远离自由基的影响——自由基是一种会破坏健康细胞、使癌细胞扩散的微粒。
Cell phone companies love to offer free phones to induce you to sign up for another two-year contract.
手机公司都会以提供免费手机为名，让你签下两年的花费合约。
The electrons knocked free at the surface of the cell, however, were not being carried away in this manner.
然而，电池表面的自由电子无法通过这种方式成为电流传出。
Fish oils decompose quickly and in the process unleash free radicals, which are linked to cell damage.
鱼油会很快分解，分解过程中释放出自由基，而自由基与细胞损害有关。
It contains chemicals called polyphenols that reduce the presence of free radicals, which cause cell and DNA damage.
他富含一种叫做多酚的化学物质，其可以减少自由基从而降低细胞和DNA损害。
Because a new study in the journal Cell Metabolism suggests that, when it comes to diabetes, free radicals can be good for you-and and antioxidants might make things worse.
《细胞代谢》杂志刊载的一项新研究宣称，在治疗糖尿病的过程中，自由基对人是有益的，而抗氧化物则会使病情加重。
But our kids are growing up in an age when long distance is free on their cell phones.
但我们的孩子则生长在打长途免费的年代。
"Free radicals — like the kind formed from sun exposure — damage the membrane of skin cells, potentially allowing damage to the DNA of that cell," says Heller.
“自由基(比如由阳光照射而形成的粒子)会损害皮肤细胞膜，更会对细胞DNA构成潜在的威胁。”Heller说。
The free Lingfo Python library does the difficult job of reading binary Excel files, so with little effort I wrote a short Python script that produces an RDF triple for each cell read in.
免费的LingfoPython库完成了读取二进制Excel文件这项困难的工作，所以我只费很少的精力编写了一个简短的 Python脚本，为读入的每个单元格产生 RDF三元组。
"Maybe the reason why free radicals and aging are correlated is because free radical production in the mitochondria (part of the cell) is a stress reaction to the damage of aging," Hekimi said.
海克米说：“人们之所以把自由基和衰老联系在一起，可能是因为自由基在线粒体(细胞的一部分)中产生是人体对衰老的应激反应。”
Iron plays a very important part in the reactions in our cells that produce damaging free radicals, which glom onto cell membranes and DNA, and may translate into aging the cell.
而铁元素在我们的细胞中产生一种具有破坏性的，能渗透进细胞膜和DNA并老化细胞的物质的过程中扮演着重要的角色。
By opting for a simpler phone and implementing some simple rules I've reduced my cell phone stress, one day hopefully I'll be cell phone free!
选择一款功能简单的手机，实践一些简单的规则，我的手机焦虑症已经减轻了不少。希望终有一日我能成为一个手机自由人！
To the scientists' surprise, the mice that were dosed with cell phone radiation did not suffer from memory impairments as they aged-unlike their radiation-free counterparts.
使科学家们吃惊的是，受到手机辐射测试的老鼠在衰老过程中没有出现记忆障碍——不像那些未受辐射的参照鼠。
These services aren't truly free; you pay for the songs when you purchase a new cell phone, or for signing a contract for broadband intern.
但这些服务并非名副其实地“免费”，因为在购买新手机的时候，你同时也就为歌曲或者签署的宽带服务协议掏了腰包。
Remember when it felt really special to get a free basic cell phone when you signed a two-year service contract?
还记得你如果签一个为期两年的服务合约，就可以得到一部免费的蜂窝电话的那种特别感觉吗？
Experts think the toxic chemicals in smoke can damage the DNA in hair follicles and generate cell-damaging free radicals as well.
专家们认为香烟中的有毒化学物质灰损害毛囊中的基因，同时产生破坏细胞的自由基。
My wife won't let me go cell phone free, she likes to know that I'm reachable, which is understandable as I have a few medical conditions.
我的太太不希望我成为手机自由人，她希望能随时联系上我。她的想法是可以理解的，因为我有一些病史。
They watch as the inmates work the cell door controls to free the rest of general population.
他们看着囚犯打开了所有牢门，将一般牢房区的所有犯人放了出来。
Bianchi said she owns stock in Verinata Health, a company that is developing cell-free fetal DNA tests for Down syndrome, although that company had no role in the new study.
比安基说她在韦尔·纳塔健康中心持有股份，该公司正研发胎儿游离dna检测唐氏综合症。虽然该项公司尚没取得什么新进展。
Both types of tea are abundant in certain antioxidant chemicals called flavonoids, which obstruct the action of cell-damaging free radicals.
各种类型的茶都富含有某种被称为类黄酮的抗氧化物质，黄体酮的起防止自由基破坏细胞的作用。
Both types of tea are abundant in certain antioxidant chemicals called flavonoids, which obstruct the action of cell-damaging free radicals.
各种类型的茶都富含有某种被称为类黄酮的抗氧化物质，黄体酮的起防止自由基破坏细胞的作用。
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