count是数数，don't count your chickens 不要高兴太早，话别说得太早，别高兴太早。

【例句】
The contract is not signed yet.Don't count your chickens.
合同还没签呢。别高兴得太早。

It's quite possible that you will get the job, but don't count your chickens before they are hatched.
你很有可能得到这份工作,但也别过早乐观。