adj.不规则的，不确定的，不稳定的，不可靠的
n.漂砾，漂石

Her mood swings were so erratic, one moment she was happy, the next she'd be in tears.
她的情绪变化无常，一会儿高兴，一会儿又哭起来。
The stock market's performance has been erratic due to global economic uncertainty.
股市的表现由于全球经济的不确定性而波动不定。
His behavior was erratic, making it difficult for us to predict his next move.
他的行为反复无常，我们难以预料他会做什么。
The weather forecast predicted erratic rainfall throughout the week.
天气预报显示本周降雨量会时有时无。
Her cooking style is erratic; sometimes she prepares elaborate gourmet meals, other times it's just a simple pasta dish.
她的烹饪风格变化无常，有时做精致的大餐，有时又只是简单的意大利面。
The child's attention span was erratic, making it hard for teachers to keep up with his learning pace.
孩子的注意力时断时续，这让老师很难跟上他的学习节奏。
The stock price of that company has been erratic, causing investors to lose faith in its stability.
那家公司的股价起伏不定，使投资者对其稳定性失去了信心。
His health has been erratic lately, with frequent periods of illness followed by sudden recoveries.
他最近的身体状况反复无常，一会儿病倒，一会儿又好起来。
Her memory was erratic, and she often struggled to recall important details from the past.
她的记忆力不稳定，常常记不清重要的过去的事情。
The athlete's performance on the track was erratic, making it challenging for them to maintain their position in the race.
这位运动员在跑道上的表现起伏不定，这让他们在比赛中保持位置变得困难。