after a meal 缩写可以P.C.
after dinner
after meal\lunch\supper
after having meal
after meal
after having meal
after meals/after a meal副词性
after-dinner形容词性
例:
Take one of these pills three times a day after meals.
这些药片每日服三次,每次一片,饭后服。
He made a very boring after-dinner speech.
他在宴会后的讲话很枯燥。