The security door is so firm that nobody can break in.

防盗门这么结实，没有人能闯进来。

youdao

One time, the public security door of our building was broken.

有一次，我家楼的公共防盗门坏掉了。

youdao

Not far from the elk, Miller opens an inconspicuous security door into the museum's private world.

离麋鹿不远处，Miller开启了一扇通向博物馆秘密世界的不起眼的安全门。

youdao

Security forces have also launched a door-to-door search for members of the group.

VOA: standard.2009.07.30

He says the current U.S.strategy of pushing for a two-state solution is not winning support from Israelis who want to see a partition but are worried about Israel's security with Palestinians running their own state next door.

VOA: standard.2009.10.31

The red metal security door that is used to close up the stall in the evenings is pockmarked with dozens of bullet holes.

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Like many Moscow apartments, it did not look much from the outside - a heavy, grey-steel security door, a scruffy communal entrance hall, a grand old staircase with a cast-iron banister spoiled by multiple layers of shiny, off-blue institutional paint.

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This "looking through" I interpret as similar to the way the door security guy at a posh night club "looks through" you as you attempt to persuade him your are on the guest list.

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