The CEO's inscrutable expression made it impossible to guess how the meeting had gone.

執行長那副難以捉摸的表情，讓人完全猜不出會議結果如何。

Several customers complained that the refund policy was written in inscrutable legal language.

好幾位顧客抱怨退款政策是用艱澀難懂的法律用語寫成的。

The shipping invoice contained inscrutable codes that even our logistics team couldn't explain.

這張運送發票上有一些難解的代碼，連我們的物流團隊都無法解釋。