- 重点词汇
- byprep. 在…旁边;表示方式;由于;经过;到…之前;
- dynamically[计] 动态的;
- forconj.因为，由于;
- infertileadj.不能生育的，不结果实的;贫瘠的，不毛的;
- observedv.观察，研究( observe的过去式和过去分词 );遵守;（尤指为科学目的的）观察;看到;
- ovulatoryadj.产卵的，排卵的;
- twon. 两个;两个东西;两点钟;一对;
- ultrasoundn.超声;超声波;
- wasv. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质（ be的过去式 ）;在，存在;不受干扰;
- 相关例句
Growing straight , so that the micropyle is at the end opposite the stalk. Used an ovule.
直生的直立生长以至珠孔在茎的另一端的. 用于形容胚珠.
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Frequently the basal ovule, which is the last one to be fertilized would abort.
最后受精的基生胚珠经常败育.
——辞典例句
Male reproductive cells travel down the tube and join with the ovule, fertilizing it.
雄性生殖细胞到达花柱然后加入卵子, 使它授精.
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合点 :被子植物胚珠上的一个区域,在合点处珠心和珠被愈合.
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Testa The hard dry protective covering of a seed, formed from the integuments of the ovule.
外种皮:覆盖在种子外部的坚硬干燥的保护层, 由胚珠的珠被发育形成.
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Ovarian 2 rooms, ovule much line, style filiform, post tongue shape is compressed.
子房2室, 胚珠多列, 花柱丝状, 柱头舌状扁平.
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The occurrence of more than one embryo in the ovule denotes polyembryony.
在胚珠中有一个以上的胚发生是表示多胚现象.
——辞典例句
The fertilized ovule becomes the seed, and the ovary becomes the fruit.
已受精的卵子成为种子, 而子房变成了果实.
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桑椹胚形成于''.'囊'.''胚之前且处于胚胎''.'期'. ''内的球形裂球群,由受精卵细胞的分裂而成.
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By day 11 the ovum begins to attach and implant in the lining of the uterus.
到第11天卵子着床嵌入子宫内壁.
——辞典例句
Field distribution pattern of the first generation of rice stem fly ovum was preliminarily studied.
对稻秆蝇一代卵在田间的分布型进行了初步研究.
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In vitro, the acrosome reaction of sperm does not influence the ovum fertilization rate.
在体外, 精子顶体反应率的高低与卵子受精率没有明显的相关性.
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The ovum develops only in the female, and the sperm cell develops only in the male.
卵细胞仅在女性体内产生, 而精子细胞则仅在男性体内制造.
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