1. It's freezing/chilly out there! 外面冷死了!

　　2. There is a real nip in the air today。今天寒气袭人。

　　3. The wind really chills me to the bone. / The wind is bone-chilling。 这寒风真是刺骨。

　　4. I can't stop shivering from the cold。我冷得不停打哆嗦。