訂明出險時如有其他保險承保同一損失，保險人只負責其比率之數的保單條件。
A policy condition stating that, if other insurance covers the same loss, the insurer pays only its rateable proportion.
訂明出險時如有其他保險承保同一損失，保險人只負責其比率之數的保單條件。
A policy condition stating that, if other insurance covers the same loss, the insurer pays only its rateable proportion.