frivolity
n
1 [U] frivolous behaviour 轻浮的举止
youthful frivolity 年轻人的心浮气躁.
2 [C usu pl 通常作复数]
frivolous activity or comment 无聊的活动或议论
I can't waste time on such frivolities. 我不能在这种无聊的事情上浪费时间.
It had been baked by a college student who had used over 1,000 pounds of flour, 800 pounds of sugar, 200 pounds of fat, and 400 pounds of various other ingredients.