争相购买

fall over each other to buy

争购一空

be completely snapped up

人人争相报名。

Everyone vied with each other to sign up.

争着发言

scramble to get heard

用不着争座位

there's no need to fight for a seat

争时间、抢速度的战斗

battle where speed and time are of the essence

争上游，长志气

reach for the stars

分秒必争

race against the clock

人人争先进。

Everyone is striving to get ahead.

不要再争了。

Stop squabbling.

争得面红耳赤

argue until one is red in the face

他争点儿摔了一跤。

He nearly fell over.

争知?

how does one know?