The butterfly flittered from flower to flower.

蝴蝶在花丛中掠过。

I scarcely think the notion that flittered across my brain was an error.

我并不以为，刚才闪过我脑际的想法是个错误。

Light flittered through the wooden slats at the sides of the Bridges, put there to protect the trains from the 200mph winds that can barrel down the canyon in stormy weather.

光线穿过桥边的木板条照到列车上，这些木板条是用来挡风的，这里的风速可达每小时200英里，在暴风雪的天气里可以把火车吹下峡谷。