unforeseeable

US /ˌʌn.fɔːrˈsiː.ə.bəl/
UK /ˌʌn.fɔːrˈsiː.ə.bəl/
1.

不可预见的

An unforeseeable event or situation is one that cannot be known about or guessed before it happens:

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Loss due to unforeseeable circumstances is borne by the purchaser.