diff --git a/library/src/main/ets/downsampling/DownsampleUtils.ets b/library/src/main/ets/downsampling/DownsampleUtils.ets
index cd8efdb..567026a 100644
--- a/library/src/main/ets/downsampling/DownsampleUtils.ets
+++ b/library/src/main/ets/downsampling/DownsampleUtils.ets
@@ -52,6 +52,7 @@ export function getScale(sourceWidth: number, sourceHeight: number, requestedWid
 
   }
 }
+//四舍五入
 export function  round(value: number): number {
   return Math.floor(value + 0.5);
 }
\ No newline at end of file
diff --git a/library/src/main/ets/downsampling/Downsampler.ets b/library/src/main/ets/downsampling/Downsampler.ets
index 4f15775..3a66fb1 100644
--- a/library/src/main/ets/downsampling/Downsampler.ets
+++ b/library/src/main/ets/downsampling/Downsampler.ets
@@ -54,7 +54,6 @@ export class Downsampler {
       }
     }
   }
-
   getDownsampler(downsampType: DownsampleStrategy) {
     switch (downsampType) {
       case DownsampleStrategy.FIT_CENTER_MEMORY: