For example, in the case of the evaporating puddles, the decreasing measures of the circumferences recorded at intervals can be expressed in terms of how much less distance around the puddles is observed with every half hour that passes during the course of the morning.
(the circumferences; recorded; L:at intervals) (the decreasing measures of the circumferences; can be expressed; L:in the case of the evaporating puddles) (less distance around the puddles; is observed; T:with every half hour) (every half hour; passes; T:during the course of the morning)
the circumferences the decreasing measures of the circumferences less distance around the puddles every half hour
recorded can be expressed is observed passes
L:at intervals
L:in the case of the evaporating puddles
T:with every half hour
T:during the course of the morning