Obviously, heavy hatch-doors did not swing open unaided.

显然，这沉重的通道口的门不可能自己打开。

youdao

They make the door difficult to swing open and close, but they work.

它在开关门时的摇晃使得开门不方便，但是它们确实起作用。

youdao

The next day, at about 8 in the morning this gate will swing open again.

第二天大约早上8点，大门又重新打开。

youdao

Using this technique, EADS has printed metal hinges for engine covers: the hinges allow the covers to swing open for engine maintenance.

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Shortly after the movie started, they and others noticed the emergency exit door to the audience's right swing open, spilling light from an outside lamp into the darkened theater.

WSJ: Witnesses Describe Colorado Theater Shooting

Doors swing open, and struggle bites the dust.

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