два значения слова LAST.
одно их них - последний. второе - под катом.
If an event, situation, or problem lasts for a particular length of time, it continues
to exist or happen for that length of time.
The marriage had lasted for less than two years...
The games lasted only half the normal time...
Enjoy it because it won't last.
If something lasts for a particular length of time, it continues to be able to be used for that time,
for example because there is some of it left or because it is in good enough condition.
You only need a very small blob of glue, so one tube lasts for ages...
The repaired sail lasted less than 24 hours...
The implication is that this battery lasts twice as long as other batteries...