说明数据、现象等不稳定，统计数据时高，时低，数据信息变化频率较快。 近义词：忽快忽慢，时高时低等。 意思：一会儿高，一会儿低。
但是，气候条件存在波动，造成干湿天气交替，以致可以获取的动植物数量忽高忽低。
There were, however, fluctuations in the climatic conditions, with the consequences that wet conditions were followed by dry ones, so that the availability of plants and animals oscillated brusquely.
情绪忽高忽低。
体温忽高忽低，身体变黄。
High body temperatures return and the body turns yellow in color.
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