Why does it say "Ki Chol Yameinu"?
Radak: There were not good days; all of them turned with Your anger.
What is the meaning of "Panu v'Evrasecha"?
Rashi: They turned [away] and were eradicated and went away in Your anger.
Malbim: This refers to natural death decreed due to Adam ha'Rishon's sin. Evrah is when anger at the sinner breaches the border, to be angry also at people who did not sin. All generations, who did not sin, were punished due to Adam's sin.
What is the meaning of "Kilinu Shaneinu"?
Radak: "Kilinu" is Po'el Yotzei (it acts on others); we caused [our years to be finished] via our sins.
What is "Kemo Hegeh"?
Rashi: It is like a saying, which is finished quickly. Radak - so our years pass quickly.
Malbim: The decree that all people must die came out as a Dibur; [Hashem] said and decreed.
