Gb	Eng
这种冒险成分更给探险活动平添几分乐趣.	The element of risk gave (an) added zest to the adventure.
一丝笑容使她脸上平添了生气.	A smile animated her face.
他那难得一见的微笑在他死板的脸上平添一些生气.	A rare smile lit up his stern features.