know what's what
informal› If you know what's what, you have a lot of experience and can judge people and situations well:
“know what's what”在英语词典中的解释及翻译
“know what's what”在英语词典中的解释及翻译
(know what's what在剑桥高级学习词典和同义词词典的解释 ©剑桥大学出版社)
“每日一词”
likeable
A likeable person is pleasant and easy to like.
