【unsure音标】 英[ˌʌnˈʃʊə(r)] 美[ˌʌnˈʃʊr]
【单词释义】 unsure是什么意思：
adj. 不确定的；不肯定的；没有自信的
[单词分级] 商务/生活英语词汇
【单词例句】
◇ Since then scientists have come to learn that snowflakes can only form into 35 different shapes. Although scientists are also unsure why exactly the various shapes of snowflake form, they have identified eight predominant shapes, with each of these eight shapes having several different variations.
之后，科学家了解到雪花只会有35种不同形状的造型。虽然科学家也不清楚雪花会形成各种各样形状的准确原因，但是他们已经确定出了雪花的8种主要形状，这8种形状中的每一种又有几种不同的变化。