今天我们要学的词是 preterm。 Preterm 没到预产期的，也就是我们常说的早产。For the fifth consecutive year, the preterm birthrate in the USA continued its steady downward trend. 美国早产出生率连续第五年平稳下降。In 2006, the nation's preterm birthrate peaked at 12.8%. 美国2006年新生儿早产率达到12.8%最高点。The goal is to lower the preterm birthrate to 9.6% by 2020. 预期目标是要在2020年以前，将早产率降低到9.6%。Preterm birth is the leading cause of infant death during the first month of life. 早产是导致婴儿在出生后一个月内夭折的主要原因。好的，今天我们学习的词是 preterm, preterm, preterm....