s. dependent upon or characterized by chance
s. marked by great carelessness
r. without care; in a slapdash manner
n. 偶然性, 偶然事件
a. 无计划的, 偶然的, 随便的
adv. 偶然地
1. The books on the shelf were arranged in a haphazard manner.
书架上的书摆得很杂乱。
2. He made a haphazard decision without thinking about the consequences.
他在没有考虑后果的情况下做出了一个随意的决定。
3. The kids played in the park in a haphazard way, running everywhere.
孩子们在公园里乱跑,玩得很随意。