Edible films needed to be sealed when used as a packaging bag.

可食用膜作为一种软包装材料，需要对其进行封口制袋。

youdao

Katayev had marked one box of documents to be sealed for a number of years.

Katayev在一个文档盒上注明此盒应被封存多年。

youdao

These areas are supposed to be sealed off, but sometimes the seal is ineffective.

有时我们认为采空区已封闭了，但可能并未有效封闭。

youdao

So it's important to realize the role of ceramics; they need to make storage jars that could be sealed very well and preserve the stuff for a very long time, and indeed, they did that.

从中希腊人意识到陶艺的重要性,他们需要烧制可以密封得很好的,可以用来长久保存食物的陶罐,他们也的确这样做了

耶鲁公开课 - 古希腊历史简介课程节选

The Greek prime minister said he looks for an agreement to be sealed this week.

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Their efforts look increasingly likely to be sealed with a handshake between prime minister and first minister on Monday.

BBC: Scotland politics

However, Sony cautions that the device's port covers need to be sealed up tight for its claim to ... well, hold water.

CNN: Waterproof phones and tablets make a splash