to wash / to squander / to sweep away / to move / to shake / dissolute / pond
荡
=
艹
+
汤
:
Don Quixote (d) messed up his artificial lawn (艹) with soup (汤) in the anglepod's bathroom (ang4). After washing (荡) and shaking (荡) the lawn he checks with an oscilloscope (荡) to see if there are still soup particles left on the lawn.