by 
Pinyin: Liángkuai
Chinese: 凉快
English: cool
Example sentence：
Tiānqì yuèláiyuè liángkuai le.
天气越来越凉快了。
The weather turns to cooler and cooler.
Zhèr liángkuai, kuài zuòxià xiūxi yixià ba!
这儿凉快，快坐下休息一下吧！
Sit down to have a rest. Here is cool.
More Details about word “cool”：
http://www.talkinglearn.com/en/Chinese_English_Dictionary?word=cool
