查英文单词翻译时这些是什么意思
比如absence,翻译是：
名词 n.
1.不在,缺席[U][C][(+from)]
She never speaks ill of anyone in his or her absence.
她从不乘人不在时说别人的坏话.
2.缺少,缺乏[U][(+of)]
The absence of color in that
后面的[U][C]是什么意思?