We're taking a vacation in June.
我们6月份要去度假。
They went to Europe on vacation.
他们去欧洲度假了。
I've still got some vacation time left before the end of the year.
我到年底之前还剩下一些假期。
the Thanksgiving/Christmas/Easter/summer vacation
感恩节假期/圣诞节假期/复活节假/暑假
UK the long vacation (= in the summer)
长暑假