[哈啦]

其實我有去amazon上看過，上面也有賣，但有這一句話不太懂啥意思？
Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.

APO/FPO是指什麼？