The courier left no trace of the package at the front desk this morning.

快遞員今天早上在櫃台沒有留下任何包裹的蹤跡。

Auditors found traces of unauthorized transactions in last quarter's financial records.

稽核人員在上一季的財務紀錄中發現了未經授權交易的痕跡。

The hotel staff cleaned the room so well that no trace of the previous guest remained.

飯店員工把房間打掃得非常乾淨，前一位房客的痕跡完全不見了。