aluminum foil
collocation铝箔
She wrapped the sandwich in aluminum foil to keep it fresh.
她用铝箔把三明治包起来保鲜。
箔；铝箔
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箔；铝箔
Very thin sheet of metal, especially aluminum, used for wrapping or covering things.
She covered the dish with aluminum foil before putting it in the oven.
她在把盘子放进烤箱前用铝箔盖住。
非常薄的金属片
A very thin sheet of metal.
即将成功时的失败；挫败；沮丧；流产。
Failure when on the point of attainment; defeat; frustration; miscarriage.
动物的足迹。
The track of an animal.
窗饰等中的小弧形。
A small arc in the tracery of a window, etc.
In the play, the witty servant acts as a foil to the serious master.
在剧中，机智的仆人作为严肃主人的陪衬。
Her simple dress made a perfect foil for her sparkling jewelry.
她简洁的裙子完美地衬托了她闪亮的珠宝。
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铝箔
She wrapped the sandwich in aluminum foil to keep it fresh.
她用铝箔把三明治包起来保鲜。
铝箔包；锡纸包
You can cook vegetables in a foil packet on the grill.
你可以把蔬菜放在铝箔包里烤。
陪衬；衬托物
The cowardly character is a foil to the brave hero.
这个胆小的角色是那位勇敢英雄的陪衬。
戏剧中的陪衬角色
The playwright uses the servant as a dramatic foil.
剧作家把仆人用作戏剧中的陪衬角色。
花剑
He held his fencing foil carefully during the competition.
比赛时他小心地握着他的花剑。
雷欧提斯，我愿做你的陪衬：正因为我技艺不精，你的本领才会像最暗夜空中的一颗明星那样，闪耀出夺目的光辉。
In the novel, the quiet and cautious sidekick acts as a foil to the loud and reckless hero.
在这部小说中，安静谨慎的配角是吵吵嚷嚷、鲁莽冒失的主角的陪衬。
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foil 可联想成薄薄的锡纸：厨房里用铝箔包食物；文学里 foil 是陪衬角色，像锡纸衬托食物一样衬托主角。
语域：neutral 常见场景：kitchen / food packaging、baking、crafting 作名词时，foil 通常指铝箔等金属薄片，多用于厨房（包裹或烤制食物）、食品包装和手工艺等日常场景；这类用法在一般书面语和口语中都很自然，属于中性词汇。
表示‘陪衬’时常用a foil to/for结构
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.