He casually随便他
plan casually非正式地计划
use casually漫不经心地利用
judge casually非正式地评判
doubt casually偶尔怀疑
approach casually马虎地处理
enter casually偶然进入
box casually漫不经心地把…装入盒中
inspect casually偶尔视察
"he dealt with his course work casually"
"glanced casually at the headlines"
同义词：nonchalantly