每个容器元素都有这样的标志，可以点击它将这个元素折叠起来。

Each container element has such a marker, and you can click on it to collapse or fold that element.

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信封扁平，装折叠纸的容器，尤其用来装信。

A flat, folded paper container, especially for a letter.

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容器(1)可通过设置喷嘴以及通过折叠该喷嘴以形成密封该容器的卡夹来密封，容器的内容物通过该喷嘴被分配。

The container (1) may be sealed by providing a spout through which the contents of the container are to be dispensed, and by folding the spout over to create a nip which seals the container.

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