My gun at the crime scene? It's not a coincidence. He offered to clean it for me.

我的枪在犯罪现场？这不是巧合。他之前主动要帮我清理。

youdao

Make it a habit to clean the bore with a cleaning rod and patch to wipe away anti-rust compounds in the gun each time immediately before you shoot it.

应该养成一个习惯，那就是在每次射击前用通条、擦枪布擦去枪内的防锈油。

youdao

A mini-sized sand-blasting gun of ejection-and absorption type, used to clean and roughen the metallic surfaces for thermal spraying.

一种小型的射吸式喷砂枪，可用作喷涂喷焊前的表面清洁毛化处理。

youdao

Try a clean shaven, gun owning, khaki wearing, church going conservative.

FORBES: Who Stole the Green Movement?

Arias has acknowledged trying to clean the scene of the killing, dumping the gun in the desert and working on an alibi, even attending a memorial service for Alexander before her arrest in July 2008.

NPR: Prosecutor In Arias Case Set For Closing Arguments