N-COUNT
發脾氣;耍性子
If a child has a tantrum, they lose their temper in a noisy and uncontrolled way. If you say that an adult is throwing a tantrum, you are criticizing them for losing their temper and acting in a childish way.
例句
My son had a tantrum and banged his fist on the ground...
我兒子大發脾氣，一拳捶在了地上。
He immediately threw a tantrum, screaming and stomping up and down like a child.
他立即耍起性子來，像小孩似的跺著腳又叫又跳。