Definition
used to express that there is no other option or course of action available in a given situation.
別無選擇
Now that you've signed the contract, there's no help for it but to fulfill it.
既然你已經簽了合約，那就沒有別的辦法，只能履行它。
If there is no other way, there's no help for it but to accept the result.
如果沒有其他辦法，那就只能接受結果了。
As the weather continues to worsen, there's no help for it but to cancel the picnic.
隨著天氣持續惡化，我們別無選擇，只能取消野餐。