The child had ingested a "button" battery, one of those flat silver discs used to power remote controls, toys, musical greeting CARDS, bathroom scales and other home electronics.
In another few hours the devilfish would have a "flat can" no battery juice left.
不消两三个钟点，“乌贼号”就会剩下个“空电池”，一点电也没有了。
3
L Used for green technology, such as battery-charged cars and wind turbines; in laptops, flat-screen TVs and mobile phones; for lasers; and for medical equipment, such as MRI scans.