Is the iPad an effective learning tool?

ipad是否是有效的学习工具？

Speeches are an excellent learning tool.

演讲是一种绝佳的学习工具。

Make the most of this wonderful learning tool!

最大水高山施展这一极好的练习工具的作用吧！

You do by now think of Twitter as a learning tool, right?

你现在的确把Twitter当做一个学习工具了吧？

It is a learning tool. About us, and the world around.

这是一个关于我们和我们周围世界的学习工具。