坟: grave, tomb, embankment, mound, ancient book...
哥哥: older brother...
一技之长: proficiency in a particular field (idiom), skill in a specialized area (idiom)...
火: fire...
丢三落四: forgetful, empty-headed...
实体: entity, substance, thing that has a material existence (as opposed to a conceptual, virtual or online existence), the real thing (as opposed to an image or model of it)...
字幕: caption, subtitle...
退: to retreat, to decline, to move back, to withdraw...
恰好: as it turns out, by lucky coincidence, (of number, time, size etc) just right...
躺: to recline, to lie down...
