放假[fàngjià]recesstakeaholidayhaveaholidayorvacation;beginavacation;givesb.aholiday;haveadayoff
放假 [简明汉英词典]take a holidayrecess
一般说是on vacation也可以说是take a holiday如果是公司请假放假一般则用 on leave,这是外企的正规说法.
vacation period
on vacation