The surgeon would first apply a sponge over the cleaned wound and then cover it with a plastic seal.

医生首先将一块海绵放在清洗过的伤口上，然后用一个塑料密封垫将伤口封起来。

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To protect a hydrated gel layer on the surface of a glass electrode, a measuring end is sheathed with a bottle shape plastic seal container;

为了保护玻璃电极表面的水合凝胶层，在测量端套有一个瓶状塑料密封容器。

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The black plastic will help seal and the weight of the door holds it down.

黑色塑料膜的作用是密封，而门的重量会把它压住。

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In recent months leading wildlife experts have called for people to be more careful with their litter after a basking shark was filmed with plastic around its nose and a grey seal was photographed with plastic around its throat near Kitterland.

BBC: Manx beach clean collects record amount of rubbish

One obvious winner is the Supreme Corq from America, devised after its inventor had seen plastic bungs being used to seal the casks in some of the classiest estates in France.

ECONOMIST: Plastic wine stoppers

And in February 2003, the U.S. Department of Homeland Security advised Americans to stock up on duct tape and plastic sheeting so that they could seal their homes in the event of a chemical or biological attack.

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