Colds mutate even while they're infecting you, and new strains pop up so often that by the time drug-makers create a vaccine against one variation, the serum is already out of date.

即使在感染你的时候，感冒病毒也会发生变异，而且新的病毒毒株经常出现，以至于当制药商研制出针对其中一种变异的疫苗时，血清已经过时了。

youdao

youdao

youdao

While one-time inventory write-downs dealt a 22-cents-per-share blow, the company still missed estimates in its ongoing business by a sizable 12%.

FORBES: RadioShack Gets Slammed

It allows up to 10 people to connect with one another at any one time while Facebook can only connect people on a one on one video chat.

BBC: Facebook and Skype's video chat link-up

And while the one-time superstar might be smarting from such an ignominious end to the season, he might take heart from knowing that another New York A Rod has got it a whole lot worse than he does.

FORBES: A Rod--The Horse--Loses At Belmont