产双胎的

Methods A retrospective evaluation was done for all the newborns who were born in the provincial women and children's health care hospital from 1995 to 2004-The morbidity, mortality and fatality rate were calculated for each observed year and different seasons. The influence of gender, body weight, gestational age as well as polyembryony and mode of delivery on the asphyxia was analyzed.

对近10年郑州大学第三附属医院分娩的所有活产新生儿的病历资料进行回顾性分析，计算窒息的发生率、死亡率、病死率，观察上述指标的逐年变化趋势及季节变化的情况，并探讨性别、双／多胎、出生体质量、胎龄分娩方式对这些指标的影响。

The change trude of Base-difference rate between 3 breeds was correspondent to their prolificacy.

三畜种的碱基错义突变数目与它们产双胎率高低的趋势相一致。

Bonnethead shark Females of this small hammerhead shark species were thought to mate with several males and store their sperm for later use, so scientists assumed the resulting litter of baby sharks would have several different fathers.

窄头双髻鲨科学家曾认为，雌性窄头双髻鲨有不同的性伴侣并将不同的雄鲨*储存在体内供今后孕育幼鲨，于是雌性窄头双髻鲨产下的每胎小鲨鱼都可能有若干个父亲。

Dicephalus is common in reptiles and particularly in British grass snakes, who lay their eggs inside compost heaps where decomposing matter produces heat.

双头畸胎在爬行动物中很常见，尤其是英国草蛇，这种蛇把卵产在堆肥堆里，肥料里面正在腐烂的物质产生热量。

When monotocous breedof ewes were immunized with various dose of pCIS, 7 out of 27 ewes produced twin lambs.

应用各种剂量的 pCIS 免疫27只单胎品种绵羊，结果有7只产双羔(孪生率25.9%)。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。