at breakfast的用法和樣例：
例句
- He forgot to buy more coffee yesterday, so he was persona non grata at breakfast this morning!
他因昨日忘了多買些咖啡，今晨早餐上遂成為家中眾矢之的！ - The president meet with senior white house aide at breakfast.
早餐時總統會見了白宮的高級助手。 - He drinks tea at breakfast.
他在早餐時飲茶。 - The President met with senior White House aides at breakfast.
早餐時總統會見了白宮的高級助手。
