Its tighter orbit meant it needed just 20 days to go around us. A day on Earth back then was only 18 hours long.

那时月球运行轨道较小，绕我们一周也就需要20天的时间，当时地球上的一天也就只有18个小时。

youdao

But calculating it alone doesn't necessarily tell us whether or not it will just happened of its own accord.

但是计算这些物理量并不一定能够告诉我们，这些变化是否会自发的进行，而这正是我们想要做到的。

youdao

That's changing today, with the company email-blasting US customers about its just-released AE2w Bluetooth headphones.

ENGADGET

Yandex, the Russian search giant, has just launched its first product for the US market: a voice-controlled social search app called Wonder.

ENGADGET: Yandex launches Wonder, a voice-controlled social search app for the US market (update)

Apple has been chasing NFC patents for years, but it's just now been granted a US patent for its own approach to a transportation check-in -- one of the most common uses of the technology in the real world.

ENGADGET: Apple nabs patent for NFC-based travel check-in, doesn't quell NFC iPhone rumors just yet