About 30 minutes later.

大约半小时以后。

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The Pacific tsunami warning centre in Hawaii issued a tsunami warning soon after the quake struck, but withdrew it about 30 minutes later.

位于夏威夷的太平洋海啸中心在地震后马上发布了海啸警告，但是在大约30分钟后解除。

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That drove several thousand of the marauders out of the museum complex in minutes, he said, but when the tank crewmen left about 30 minutes later, the looters returned.

几千抢劫者就这样在数分钟内被驱赶出博物馆，他说，但是当坦克里的士兵离开大约30分钟以后，抢劫者又回来了。

youdao

The ecstatic crowd swelled to three or four thousand before Ms Suu Kyi, in a traditional lilac dress, finally appeared, about 30 minutes later, on a platform behind the gate of her compound.

BBC: Burma releases pro-democracy leader Aung San Suu Kyi

Neighbors said all five had gone inside the home -- a two-story structure, one of many in the neighborhood about 30 miles northeast of Atlanta -- with a stretcher, then the single firefighter ran out about 30 minutes later.

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Kennedy was shot about 15 minutes later, at about 12:30 p.m.

CNN: AllPolitics - JFK Footage