Using stem cell technology, reproductive scientists in Texas, led by Dr. Richard r. Berhringer at the M.D. Anderson Cancer Center, have produced male and female mice from two fathers.

使用干细胞技术，由richard r . Berhringer博士带领的德克萨斯州M.D.A nderson肿瘤中心的生殖科学家们利用两只公鼠成功繁殖出雌性和雄性老鼠后代。

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This has substantially increased the difficulty of R&D, led to soaring R&D costs, and finally threatened the progress of the whole project.

这就为研发增添了不少困难，导致研发成本上涨，最终威胁到整个项目的进度。

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Shanghai Liana Enterprise Co, Ltd is one of biggest LED and decorative lighting manufacturers in the world, which collects together research and development(R&D), production and sale.

上海乾屹实业有限公司是一家集研发、 生产与销售为一体的灯具企业，同时也是全世界最大的灯饰、礼品制造商之一。

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Well, the study's authors--led by Robert R.

FORBES: Presidential Portfolios

Led by Wayne Allard (R-CO), John Cornyn (R-TX), James Inhofe (R-OK), and Jeff Sessions (R-AL), who all scored a 100 percent, the Senate had 15 members who scored an 85 percent or better.

CENTERFORSECURITYPOLICY: 2006 National Security Scorecard

Rep. David Hobson, R-Ohio, led a team of 10 representatives from a United States government plane that arrived on the island base Friday morning.

CNN: Congressmen tour Guantanamo camp