This turns Twitter intoan early-warning system (like a canary in a coalmine) for spotting negativebuzz and heading it off before it doesreal damage toyour bottom line.

这样可让Twitter变成一种预警机制 （有点象煤矿里的金丝雀），用于发现消极的发言，并在这些发言伤害到你的底线之前化解掉。

youdao

Mexico might have thrown in the towel but continued to press, with Hernandez heading wide again and Gabriel Heinze clearing off the line from substitute Guillermo Franco.

BBC: Argentina 3-1 Mexico

He kept scoring efficiently (and was 7-for-10 from the three-point arc), scoring both off jump shots and from the line, to bring his total to 42 heading into the fourth.

WSJ

They set off from the Greenwich Meridian Line in London in 1994 and cycled through Europe before heading out over the Atlantic on a unique pedal-powered boat.

BBC: Jason Lewis: Circumnavigating the world