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- primary yolk cell 初级卵黄细胞(昆虫)
- primary yolk cells [医] 初级卵黄细胞
- The yolky cell is chock-full of protein factors and hormonelike agents, and controlled by its own nonchromosomal DNA. 这个蛋黄一样的细胞，里面充满了各种蛋白因子和类激素介质，并由它自己的非染色体DNA[1]控制。
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- yolk cell A giant syncytial uncleaved cell containing the yolk. It underlies the blastodisc early in development and becomes enveloped by the blastoderm during epiboly. 卵黄细胞庞大的融合不分裂细胞，包含卵黄的。发育早期它在胚盘之下，外包时期变成藉由囊胚包裹。
- vegetal pole Opposite to the animal pole on the egg. Later in embryonic development corresponds to the point on the yolk cell furthest from the developing blastodisc. 植物极在卵上位于动物极对面。稍后胚胎发育在卵黄细胞上与发展中的胚盘最远的一点。
- The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
- Sure. We are friends since primary school. 当然，我们从小学就是朋友了。
- I started primary school when I was 5 years old. 我五岁时开始读小学。
- A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
- Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
- Love and hatred are primary emotions. 爱和恨是基本的情感。
- The Democratic primary was held this month. 民主党候选人初选於本月举行。
- yolk cell 卵黄细胞
- Primary education comes under the umbrella of local government. 小学教育受地方政府的保护。
- He only accepted the primary education off and on in his childhood. 他小时候只断断续续地接受过初等教育。
- secondary yolk cell 次级卵黄细胞
- The primary reason for advertising is to sell more goods. 做广告的根本目的是要多出售货物。
- primary yolk sac 初级卵黄囊
- Collins was nosed out by his opponent in the primary. 柯林斯在初选中就被他的对手击败了。
