According to the American Lung Association, smoking during pregnancy accounts for an estimated 20 to 30 percent of low birthweight babies, up to 14 percent of premature deliveries, and about 10 percent of all infant deaths. SECONDHAND SMOKE是什么意思_According to the American Lung Association, smoking during pregnancy accounts for an estimated 20 to 30 percent of low birthweight babies, up to 14 percent of premature deliveries, and about 10 percent of all infant deaths. SECONDHAND SMOKE在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句