The students are showcasing their martial arts skills.

學生們正在展示他們的武術技巧。

They perform different martial arts moves.

他們表演不同的武術動作。

The recorder is the first musical instrument that many students learn.

直笛是很多學生學的第一項樂器。

You can play many songs on a recorder.

你可以用直笛吹奏很多歌曲。

The students play badminton outside.

學生在外面打羽毛球。

They practice hitting the shuttlecock while playing badminton.

他們一邊打羽毛球，一邊練習打羽毛球。

Balloons expand when you fill them with air.

當你幫氣球打氣時，氣球會變大。

Once the balloons are filled with air, you can use them to make all sorts of interesting designs.

一旦氣球充滿空氣，你能做成不同有趣的造型。

The students practice the violin in class.

學生們在課堂上練習小提琴。

They follow the teacher's instructions to play the violin.

他們按照老師的指示拉小提琴。