casually
adv.
偶然地, 隨便地, 臨時地
例句
By chance; casually.
偶然地；任意地
casually thoughtless or inconsiderate.
隨便、欠考慮或者草率。
To shoot at casually.
隨意射擊
To say casually; remark.
評論隨便地說；發表意見
To talk casually; chat.
閑談；聊天