講解

Today's key word is Mobile （mobile adj.可移動的; 行動自如的; n.風鈴; 手機; ）
It means able to move or be moved freely or easily 可移動的

It means: A machine designed to convert one form of energy into mechanical energy.

Eg: Primary education is given to pupils between the ages of 5 and 11.)
Of chief importance
首要的

例句

We all have mobile phone

我們都有移動電話

延伸

Before we go to today's section, let&`&s listen to an audio about a foreigner speaks tongue twister.
媽媽騎馬馬慢媽媽罵馬。
紅鳳凰，粉鳳凰，紅粉鳳凰，粉紅鳳凰~~~~~
When I was trying, I stress on the word trying to learn Chinese.
The first thing that I did was I actually went to Youtube. But I made a big mistake. I had like this introduction via Youtube of some who just taught me the basic phrases like "Good morning, how are you".
And then they start to talk about tongues~~~ and then I start freaking out. Tongue seems to be one of the main difficulties, especially for a beginner.
It is.
Here is one foreigner who lives in Beijing talking about his experience of learning Chinese.
Notes:
--近年來有越來越多的外國人學中文。對他們來說，學習中文的一大難題就是四個聲調。實現。
（附一個英文繞口令，大家可以試一試：
While we were walking, we were watching window washers wash Washington&`&s windows with warm washing water.
當我們走路時，我們看著清潔窗戶的人用暖水清洗華盛頓的窗戶。）