They sometimes meet up to chill out and watch a movie.

他们有时聚在一起，看场电影放松一下。

《牛津词典》

After school, we used to chill out in each others' bedrooms.

放学后，我们常常到彼此的卧室里放松休息。

《柯林斯英汉双解大词典》

Does he have lots of energy for activities with friends while she'd rather rest and chill out at home?

是不是他对于朋友之间的活动精力充沛而她宁愿呆在家里休息放松？

youdao

Suites have bright, freestanding bathtubs and the eighth-floor chill-out lounge opens to a panoramic sun deck.

BBC: Mini guide to Hamburg, Germany

The chill-out factor is represented nicely in the title they've chosen for their band.

NPR: Pacifika: Peaceful Pop Sounds, in Spanish

The chill-out factor in Koushik's mood music comes partly from the great outdoors.

NPR: Koushik Bends Genres To His Will