possible的形容词是？

　　例句：

　　There are several possible explanations.

　　有几种合理的解释。

　　She blew her nose as daintily as possible.

　　她尽量文雅地擤了擤鼻涕。

　　Four possible outcomes have been identified.

　　现已确定有四种可能的结果。

　　We must consider all possible contingencies.

　　我们必须考虑一切可能发生的事。