In "Jaws" and throughout the Hollywood corpus, the sequences of shark attacks are always the same: the flash of the fin, a ripple in the ocean, blood in the water.
电影《大白鲨》以及所有好莱坞巨作中，鲨鱼来袭的镜头顺序总是如出一辙：先是鱼鳍忽隐忽现，再是海上泛起一圈涟漪，最后鲜血染红了水面。
Such devices may eventually be able to measure the level of cholesterol or alcohol in your blood and flash up an appropriate warning.
这样的装置最终还能够测量人体血液中胆固醇或酒精的含量，并适时向人们发出警告。
One is that it's slow. The blood flow response can take two to five seconds, but a thought can flash in milliseconds.
比如有人认为它太慢了，血液反馈通常耗时2到5妙，但是思维跃动一下只消毫秒之间。
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