1. He took a bite out of the costard apple and savored its sweet flavor.
他咬了一口 costard 苹果，品尝着它甜美的味道。
2. Don't be such a costard and think before you speak.
别像个傻瓜一样说话之前要先想想。
3. The actor played the role of a costard in the comedy, providing comic relief to the audience.
这位演员在喜剧中饰演了一个 costard 的角色，给观众带来了喜剧效果。