justifiable
adj
that can be justified 可证明为正当的; 有理由的
a justifiable explanation, action, use 合理的解释、行为、 用法
justifiable homicide, eg killing in self-defence正当杀人(如出於自卫).
The sea journey lasted over sixty days and nights.
海上航行持续了60多个昼夜。
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