After the holiday break, I returned to a mountainous pile of unread emails.

假期結束後，我回來面對堆積如山的未讀電子郵件。

The finance team is working overtime to clear a mountainous backlog of invoices.

財務團隊正在加班，處理大量積壓的發票。

The warehouse staff struggled to process the mountainous volume of orders during the sale.

特賣期間，倉庫人員努力處理如山般龐大的訂單量。