孩子们喜欢在热巧克力上放棉花糖。

Kids love putting ___marshmallows on top of their hot chocolate.

他的道歉听起来软弱无力，像棉花糖一样空洞，缺乏真正的诚意。

His apology sounded so weak and ___marshmallow-like, lacking any real conviction.