我姐姐的小儿子真是个讨人喜欢的孩子。

My sister's little boy is a real ___delight.

人群爆发出喜悦的欢呼。

The crowd roared with ___delight.

他似乎很喜欢捉弄他妹妹。

He seems to take great ___delight in teasing his sister.