If you're talking about tranquilizer darts, you're probably referring to the kind that are shot out of an air rifle using compressed gas, though they can also be fired from crossbows or blowguns.

如果您谈论是镇静剂飞镖，您可是使压缩步枪中射出那种，尽管它们也可以弩或吹枪中发射。