Translate the following passages into Chinese.

Passage 1

In a paper just published in Nature Communications, a team of doctors at the Children‟s Hospital of Philadelphia,led by Alan Flake, describe an artificial womb that, they hope, could boost the survival rate of most premature babies while reducing the chance of lasting disabilities. The device, which looks a bit like a high-tech jiffy bag, is designed to mimic a real womb as closely as possible. The fetus—a lamb in the team‟s trials—is surrounded in a substitute for the amniotic fluid that keeps the animal‟s lungs filled with liquid in a real uterus. Once the fetus is placed inside, the bag it is sealed to prevent germs entering.
The results are impressive. The artificial womb kept premature lambs alive for four weeks, which is longer than any previous attempt. The lambs developed normally, growing wool and moving around as they would in a natural womb.When Dr. Flake‟s team subsequently dissected them, they found no evidence of the strokes that sometimes afflict premature babies in conventional incubators. The aim of the research is to produce a system that could help human babies born at 23 weeks, which is currently the lower limit of viability. It will be a while, though, before the technology arrives in hospitals. Treating mothers at risk of premature birth with steroids is now routine. But it took more than 20 years of tests and research before that discovery was deemed robust enough to make its way into hospitals.