The future of ART/TVF is encouraging. Pregnancy rates associated with IVF are high compared to those seen in the early days of the procedure. The current efficiency of IVF is more cost-effective and efficacious in achieving pregnancy than other modalities, such as injectable gonadotropins coupled with ntra uterine insemination (IUD, which traditionally some have preferred. The increased efficiency of IVf has also resulted in an increased rate of multiple gestations. Recent data suggest that single embryo transfer, coupled witl subsequent frozen embryo transfer, results in equivalent pregnancy rates compared with the transfer of multiple embryos, without an increase in multiple pregnancy rates. Therefore, a trend toward single embryo transfer is likely to increase in the future Although the development and implementation of ivf have offered the ope to infertile couples the world over, it is vital that we as a global community strictly monitor the development of applications of this technolog. to ensure that ethical abuses do not emerge Vocabulary infertile a.不能生育的 encapsulate vi.总结,概况 meticulously ad:.一丝不苟地 aseptically ad:.无菌地 conceive v.怀孕 meIosis n.减数分裂 cleavage n.(胚胎)卵裂,分裂 chromosomal a.染色体的 oocyte n.卵母细胞 aspirate vi.用吸管将体腔中液体抽出,抽吸 laparoscopically ad:(借助)腹腔镜 Inseminate v.使受精 viable a.切实可行的 cryopreservation n.冷冻保存,低温储藏 tubal a.输卵管的 surrogacy n.代孕 micromanipulation n.显微操纵(术) intracytoplasmic a.胞浆内的 commonplace a.普通的,平常的 ethical a.伦理的The future of ART/IVF is encouraging. Pregnancy rates associated with IVF are high compared to those seen in the early days of the procedure. The current efficiency of IVF is more cost-effective and efficacious in achieving pregnancy than other modalities, such as injectable gonadotropins coupled with intra uterine insemination (IUI), which traditionally some have preferred. The increased efficiency of IVF has also resulted in an increased rate of multiple gestations. Recent data suggest that single embryo transfer, coupled with subsequent frozen embryo transfer, results in equivalent pregnancy rates compared with the transfer of multiple embryos, without an increase in multiple pregnancy rates. Therefore, a trend toward single embryo transfer is likely to increase in the future. Although the development and implementation of IVF have offered the hope to infertile couples the world over, it is vital that we as a global community strictly monitor the development of applications of this technology to ensure that ethical abuses do not emerge. Vocabulary infertile a. 不能生育的 encapsulate vt. 总结，概况 meticulously adv. 一丝不苟地 aseptically adv. 无菌地 conceive vt. 怀孕 meiosis n. 减数分裂 cleavage n. （胚胎）卵裂，分裂 chromosomal a. 染色体的 oocyte n. 卵母细胞 aspirate vt. 用吸管将体腔中液体抽出，抽吸 laparoscopically adv. （借助）腹腔镜 inseminate vt. 使受精 viable a. 切实可行的 cryopreservation n. 冷冻保存，低温储藏 tubal a. 输卵管的 surrogacy n. 代孕 micromanipulation n. 显微操纵（术） intracytoplasmic a. 胞浆内的 commonplace a. 普通的，平常的 ethical a. 伦理的