Your payment was declined due to insufficient funds in the linked bank account.

由於連結的銀行帳戶餘額不足,您的付款遭到拒絕。

The manager rejected the proposal because it contained insufficient data on projected costs.

經理退回了這份提案,因為其中關於預估成本的資料不足。

We regret that insufficient staffing has caused delays in responding to customer inquiries.

很抱歉,由於人手不足,我們回覆顧客詢問的速度有所延誤。