人们叫喊著为选手打气。

The crowd yelled (out) encouragement at the players.

每天都来为我们的哥哥们加油打气！

Encourage to inflate for our the elder brothers everyday!

老师一再给我们打气，争取早日赶上去。

The teachers encouraged us again and again to catch up soon.

我在心里为自己打气。

I mentally cheered myself up.

自行车的轮子需要打气。

The bicycle's wheel needs to be inflated.

他用打气筒为自行车轮胎充气。

He used a pump for inflating the bicycle tires.

他买了一个新的打气筒来充气。

He bought a new inflator for pumping air.

这个打气筒使用起来非常方便。

This inflator is very easy to use.

我的打气筒坏了，我需要买一个新的。

My inflator is broken, I need to buy a new one.

教练要求队员们在比赛中互相欢呼打气。

The coach asked the team to cheer each other on during the game.