The eyes behind the lenses were dark and quick-moving, taking in everything at a glance.
镜片后的眼睛黑黑的且快速转动着，一眼就能看清一切。
《柯林斯英汉双解大词典》
2
Up in the mountains are clear lakes, quick-moving small rivers, and huge formations of rock.
山上是清澈的湖泊，快速流动的小溪和巨大的岩石构造。
3
The hunting instinct in this breed is quite strong and individuals have been known to take off after any small and quick-moving prey on a moment's notice.