第1个回答 2017-10-10
skimming
1、remove (a substance) from the surface of a liquid.
2、go or move quickly and lightly over or on a surface or through the air.
scanning
1、look at all parts of (something) carefully in order to detect some feature.
2、cause (a surface, object, or part of the body) to be traversed by a detector or an electromagnetic beam.
3、analyze the meter of (a line of verse) by reading with the emphasis on its rhythm or by examining the pattern of feet or syllables.