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- At this stage the gonad is indifferent. 此时，不能辨认性别而称之为未分化性腺。
- Mammalian primordial germ cells form and migrate to the gonad during embryonic development. 在胚胎发育时期,原始生殖细胞形成并迁移至生殖腺,形成种系囊。
- In heavy infestations, the gonad was completely destroyed and replaced by mass of larval treamatodes. 严重感染的宿主，生殖腺完全被侵佔并耗尽。
- After arriving at the gonad,the germ cells develop in clusters of cells called germ line cysts. 卵原细胞进入减数分裂成为卵母细胞。
- If SRY is missing, the gonad develops into an ovary, even if the embryo is male. 如果SRY基因缺失，即使是男性胚胎，其性腺也会发育成卵巢。
- The gonad index of male maintained low level from January to July, but that of female rised monthly. (四)、卵大，发生过程短，因比特别适于长时期的观察与研究，也适合教学材料用。
- It continued to grow physically, quickly become a major larvae, even in the metamorphosis to adult, it's the beginning of the gonad Zaosi. 它身体不断地增长、很快地成为大型的幼体，甚至在变态为成体之前，它的生殖腺早巳开始发育了。
- The results showed no difference in the phenotype, the gonad and the genitalia between XO and XX female individuals in M. mandarinus. 研究结果表明：棕色田鼠XO和XX雌体在表型和内外生殖器结构上无差异；
- Splenogonadal fusion (SGF) is a rare congenital malformation in which there is an abnormal connection between spleen and the gonad. 是一种罕见的先天异常，见于脾和性腺始基的融合。现约有100例报道。常见于左侧，表现为无痛性阴囊团块或肠梗阻。
- The gonad developing to ovarian showed augmentation of size, closing to the middle of coelom and broadening of cross section. 而将要发育为精巢的性腺则呈两端尖中间稍突的梭形，增生并不明显。
- The wind whirled the dead leaves about. 风吹得枯叶在四处回旋。
- Detect the gonad and thyroid hormone content of rats by radioimmunoassay and observe the testis/adrenal structural change by light microscope. 模型大鼠的性激素含量与正常对照组有明显差异。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
- There are 26 letters in the English alphabet. 英语字母表中有26个字母。
- The gonad's appearance is saclike, inside has a cavity, and cells arrange like a strand that opens to the surface of the embryo. 其外观囊状，内部具空腔，细胞排列成管状，开口于胚胎表面。
- Foreign nationals were asked to leave the country. 外国侨民被要求离开该国。
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- A country must have the will to repel any invader. 一个国家得有决心击退任何入侵者。
- Swimming is the best way to tone up your body. 游泳是健体强身的最好方法。
- A fire was burning in the grate. 火在壁炉中燃烧着。
