If it seems to frostup quickly, check the door seal.
如果它似乎很快就结霜了，检查一下的的密封度。
2
We shall have frost tonight. Don't forget to cover up the cabbages with the mat.
今天夜里有霜冻， 别忘了用席子把白菜包好。
3
Frost thinks kids don't find the experience of being taught by smart machines as strange as older people because they have grown up in a time of computers and smart phones.