看！我考试通过了！

___Yo! I passed my exam!

升级硬盘可以显著提高计算机的输入输出速度。

Upgrading the hard drive can significantly improve the computer's ___IO speed.

在希腊神话中，伊俄是一位被赫拉变成母牛的祭司。

In Greek mythology, ___Io was a priestess transformed into a cow by Hera.

木卫一是太阳系中火山活动最频繁的天体之一。

___Io is one of the most volcanically active moons in our solar system.