以下为句子列表：
英文: The control group consisted of a systematic sampling of newborns delivered over the same period that were not readmitted (n=74).
中文: 另外我们取同时期出生但并未再入院之新生儿为对照组，共74位。
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英文: The mechanism about seed actual reproduction and artificial restoration under disturbance was investigated by using systematic sampling in the typical area of Reaumuria soongorica population at mid-young age in desert grassland region, according to two si
中文: 摘要2003年7～10月，选择黄土丘陵区荒漠草原地带两个相似生境、5个不同干扰特徵的中幼龄红砂种群更新恢复类型区为研究物件，采用系统取样法或样行法，开展了干扰条件下的红砂种群种子更新与恢复机理的初步研究。
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