形容词
中文翻译：Unknown
同义词：
['variable', 'elusive', 'unpredictable']
例句：
-
1.The mercury levels in the river have been increasing steadily for years.
这条河里的汞含量多年来一直在稳步上升。
-
2.The weather is variable, with sudden changes from sunny to rainy.
天气变化无常，一会儿阳光明媚，一会儿又下雨了。
-
3.The scientist's research was unpredictable, as he often made surprising discoveries.
这位科学家的研究不可预测，因为他经常做出令人惊讶的发现。