Our supplier's delivery schedule has become unpredictable, so we keep extra stock in the warehouse.

我們供應商的出貨時程變得難以預測，所以我們在倉庫多備了一些庫存。

Because flight times are unpredictable during the storm season, please allow extra time for connections.

由於暴風季節航班時間難以預料，請預留更多轉機時間。

The client's payments have been unpredictable lately, which makes our cash flow hard to manage.

這位客戶最近的付款時間很不固定，讓我們的現金流很難掌控。