Our manager gets a little grumpy on Monday mornings before his first coffee.

我們經理在星期一早上喝第一杯咖啡前,脾氣總是有點暴躁。

The grumpy passenger complained loudly when his flight was delayed for two hours.

航班延誤兩小時,那位脾氣暴躁的乘客大聲抱怨。

Even when customers are grumpy, our service staff should stay calm and polite.

即使顧客脾氣不好,我們的客服人員也應保持冷靜和禮貌。