You can use a trifle to mean slightly or to a small extent, especially in order make something you say seem less extreme.
例句
As a photographer, he'd found both locations just a trifle disappointing...作为摄影师，他感到两处景点都有点儿不尽如人意。'There we go,' said Diane, a trifle too cheerily…“这就对了，”黛安娜说道，语气有点儿过于兴高采烈。
N-COUNT
小事;琐事;无价值的东西
A trifle is something that is considered to have little importance, value, or significance.
例句
He had no money to spare on trifles...他没有闲钱买些小玩意儿。Believe me, it's the least I can do, a mere trifle.相信我，这是我最起码能做的了，只是小事一桩。
N-VAR
屈莱弗甜食，乳脂蛋糕（由松糕、果冻、水果和蛋奶沙司层叠制成的冷甜点，通常覆有奶油）
Trifle is a cold dessert made of layers of sponge cake, jelly, fruit, and custard, and usually covered with cream.