【棄屣】的英文翻譯可以是 **"discard as worn-out shoes"** 或更簡潔地意譯為 **"cast aside as worthless"**。

這個成語出自《漢書·郊祀志》，字面意思是“像扔掉穿破的鞋子一樣拋棄”，比喻**毫不珍惜地舍棄**。在翻譯時，可根據上下文選擇直譯或意譯：

1. **直譯（保留意象）**：
- discard/throw away like an old shoe
- treat as something to be cast off like worn-out shoes

2. **意譯（強調“輕蔑舍棄”）**：
- cast aside contemptuously
- abandon without hesitation
- reject as worthless

**例句**：
- 他功成名就后，竟將舊日盟友棄如敝屣。
After achieving success, he **cast aside his former allies as if they were worn-out shoes**.

根據具體語境，可選擇最貼切的表達方式。