翻译：这是我在大学的最后一个暑假了，所以对我而言也是很有意义的一个暑假

1.This is the last summer vacation during my university life, so it is a very meaningful vacation to me.

2.This is the last summer vacation during my university life, so it does make sense to me.
以上，美国用vacation，英国用holiday

This has been my final summer holidays in university, therefore being also a summer holidays of highly significant to me

This is the last summer vacation when i am still on campus, so this is a summer vacation of great importance to me.