The shipping manifest lists replacement rifle barrels packed in reinforced crates for export.

出貨清單上列出以加固木箱包裝、準備出口的替換步槍槍管。

Our client complained that the barrel of the hunting rifle arrived scratched and dented.

我們的客戶抱怨那把獵槍的槍管送達時有刮痕和凹痕。

At the trade fair, engineers explained how the new barrel improves accuracy for police units.

在商展上，工程師說明新款槍管如何提升警用單位的射擊精準度。