The sex of the embryo is predetermined at fertilization.胚胎的性别早在受精时就决定了。...an ideal system for studying the development of the embryo...研究胎儿发育过程的理想方法Metabolic activity quickly develops in the cells of the embryo and the a...
The mother provides the embryo with nourishment and a place to grow.母亲为胎儿提供营养和成长的空间。These developments were foreseen in embryo more than a decade ago.这些发展早在十多年前的萌芽阶段就已预见到。It was an embryo idea rather than a fully worked ...
The federal Environmental Protection Agency has determined that DEET, when used as directed, is safe.联邦环境保护机构已经认定,DEET, 当在指导下使用是安全的.DEET and other chemicals that against insects can keep mosquitoes from biting.避蚊胺和其他能驱赶昆...
The insert cDNAs were clonedinto EcoR I - digested, BAP - treated pUC 18 vectors and transformed into E.同时以EcoR酶消化环状pUC18DNA, BAP对载体5端去磷酸化.With the teacher's help, he digested the long text.在老师的帮助下, 他弄懂了这篇长课文.I have...
the abolition of serfdom in Russia in 18611861年农奴制在俄国的废除Islanders have campaigned for the abolition of one of the three tiers of municipal power on the island.岛上居民发起一场运动,要求废除岛上三级市政管理层中的一级。Abolition of children's fac...