意思是：冷静点=calm down；冷静下来；别紧张；放松一下。
句子实例：
I just chill out and play some ice hockey before moving to USA.
在去美国之前我冷静下来并且打了会儿冰球。
As he calmed down,the sharpness went out of his speech.
他冷静下来，说话时火气也就减退了。
Chill out, watch a movie, you know?
放松一下，看一部电影什么的吧？I wanna veg out in front of the television tonight.
今晚我想看看电视放松一下。
