他的批评只是一时的情绪宣泄而已。

tā de pīpíng zhǐshì yīshí de qíngxù xuānxiè éryǐ.

His criticism is just a momentary emotional release.

不必为这件事情生气，都过去而已。

bùbì wèi zhè jiàn shìqíng shēngqì, dōu guòqù éryǐ.

There's no need to be angry about this; it's already in the past.

别生气了，只是个玩笑而已。

bié shēngqì le, zhǐ shì gè wánxiào éryǐ.

Don't be angry; it's just a joke.