She'd heard a clock somewhere strike the hour as she'd slipped from her room.
她悄悄地从自己房间里溜出来时,听到某个地方的一只时钟正在整点报时。
Now, for the first time, one study offers tantalising evidence that it may be possible to build such a system to warn of some impending large quakes about an hour before they strike.
现在,有一项研究首次提供振奋人心的证据,证明有望建立一个在一些大地震发生前一个小时左右发出警告的系统。
If you fall over while SITTING STILL on an UNMOVING bicycle and strike your head on the ground, your head "travels" FASTER than the 7 miles an hour it takes to fracture your skull and KILL you!
当你静坐在静止的自行车上,你摔倒在地时,你的头部是以每小时7英里的速度着地,足可以导致你的头骨破裂而死亡。
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