A hacker with a back door could use it to, say, adjust an X-ray machine so that it administers a far higher dosage than its display shows.

有了这个后门，黑客可以利用它，比如说调整X射线机，这样它控制的剂量会比显示得还要高。

youdao

Then the door deformations in X and Y directions are analyzed with both theoretical and real gaps.

分别对车门在理论间隙和实测间隙下的Y向变形、X向变形进行分析。

youdao

For the shack listed as X on the map, the door is locked. Go to the wooden pallets beside this X Shack, near the jacket on the bloody snow, and open the bright pink wallet to find the key.

棚屋的门是锁着的，来到屋子旁边可以看到一个木架子，架子上有个亮粉色的钱包（见下图），打开就能拿到钥匙。

youdao

We drove through the city when, as you all remember, the symbols on the door -- the circle with the X and the four numbers that denoted how people were here, how many people were lost, whether or not -- making sure everybody was accounted for.

WHITEHOUSE: 10/14/09: White House Press Briefing