examine so as to determine accuracy, quality, or condition
同义词：check??/??check up on??/??look into??/??check out??/??check over??/??go over??/??check into
suss out:
From suspect.
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。