1. 半自动手枪：Automatic 自动 | Automatic pistol 半自动手枪 | Automatic rifle 自动步枪

2. 半自动：automatic pilot 自动导航装置 | Automatic pistol 半自动************ | automatic positioning device 自动定位装置

noun

1. a pistol that will keep firing until the ammunition is gone or the trigger is released

Synonym: automatic