The absence of something from a place is the fact that it is not there or does not exist.
双语例句
例: The presence or absence of clouds can have an important impact on temperature.
云的有无对气温会产生重要影响。
例: In the absence of a will the courts decide who the guardian is.
在没有遗嘱的情况下,由法庭来指定监护人。