求翻译：由于水体的提取率比正判率要重要，所以在提取率为100%的前提下，选择了正判率最高的临界值（NDWI=0.33）来初步提取水体。是什么意思？

As the water extraction rate than the rate being sentenced to be important, so the extraction rate of 100% in the premise, select the highest rate of positive sub-threshold (NDWI = 0.33) to a preliminary extraction of water body.

water bodies because the rate of extraction rates than are sentenced to be important, so the rate of extraction, under the premise of 100 per cent choose the highest rate being sentenced the threshold value = 0.33 ) (NDWI preliminary extract water.

Because the water body extraction rate is sentencing rate must be more important than, therefore in the extraction rate is under 100% premise, chose has been sentencing rate the highest marginal value (NDWI=0.33) to come the preliminary extraction water body.

Due to water extraction rates are liable to a rate to be important, on the premise of extraction rate of 100%, selected are liable to a critical value with the highest rate (NDWI=0.33) to preliminary extraction of waters.

Due to water extraction rates are liable to a rate to be important, on the premise of extraction rate of 100%, selected are liable to a critical value with the highest rate (NDWI=0.33) to preliminary extraction of waters.