The key here is to determine what is more important.
It is kept clean and cool by the waters of the river, which flow through the streets in open channels; and its old fortifications have been replaced by public walks, and, what is more unusual, by vineyards.
It's just that sometimes I wonder what is more important in your life - your career or me.
After all, what is more ironic than retiring from one career by preparing for another?
As the same stream sometimes changes abruptly from one kind to the other, the two kinds must be due to different conditions affecting the flow, and among the conditions which may cause a stream to break up into the aa have been mentioned the greater depth of the stream, a sluggish current, impediments in its course just as it is granulating, and, what is more probable, subterranean moisture which causes it to cool from below upward instead of from above downward as in the pahoehoe.